Fortified

Fortified

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100% achievement guide
By Doom Brutus
Achievement guide, including a small on how to complete all 12 levels on insane.
   
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Introduction
Hello world.
My name is Doom Brutus and I am a fanatic achievement hunter. I did not intent on creating a guide on how to obtain all achievements for this game, but as there still does not exist a guide for this, it might as well be me.

As a note, this is a guide to (easily) obtain all achievements, not a guide on how to complete every map with every class and outfit on every difficulty.

All achievements can be earned solo, except for the two invasion achievements, which are as of 03/06/18 still bugged.

I currently have little team writing a guide due to real life, for this reason this guide will be minimal. There will be no pictures or in-depth analyses. This also means I will not go over the basics, such as you need to level up to obtain unlock points, which both improve your weapons/structures or unlock new ones. However, I still hope this will be enough to obtain 21/23 achievements. Within 10 hours playtime, one could easily obtain around 19/23 achievements.
Easy achievements
Out of the 21 currently obtainable achievements, 10 achievements are easily obtainable. This means they can almost all be completed in the second level, without much time. Except for the last two mentioned.

Beatnik: Complete any map other than Easy Street without any structure kills. This can be done in level 2 normal mode. Do not place any structures, kill everything with your guns or using infantry. Note, doable alongside Reporting For Duty.

Big Spender: Spend more than $7,500 in any map other than Easy Street. This should come naturally during the easy/insane playthrough. I think I got this the first time I played level 2 on normal mode.

Circuit Breaker: Destroy 50 enemies using Tesla Coils in any single map other than Easy Street. This can be done in level 2 normal mode, place only Tesla Coils at both spawn points, and try to minimalize the kills you make yourself.

Goose it!: Destroy an Annihilator before it deploys. These are the rolling balls met for the first time in level 5. These roll fast but can be slowed by ice damage. Just play level 5 and this should come naturally. Otherwise place everything you have on one kill point, and blast the Annihilator away.

Ivy Leaguer: Complete a map other than Easy Street without the base taking damage. This should come naturally during the easy/insane playtrough. This can also be done by playing level 2 on normal mode, using the strategy for insane mode below.

Reporting For Duty: Complete any map other than Easy Street using only infantry. Infantry are any of the structres which allow you to move the unit using 1/2/3/4. This can be done in level 2 normal mode, using for example only Rifle Infantry or Tesla Troopers. Note, doable alongside Beatniks.

Stacked: Unlock every structure and weapon. This should come naturally during your normal playthrough. This means unlocking every weapon and structure for a single charachter. These do not need to be upgraded. This requires 15 unlock points.

They Shall Not Pass: Complete any map on hard, other than Easy Street without taking damage. This can be done in level 2 hard mode, using the insane mode strategy from below. If you are are having a hard time obtaining this achievement, try freezing everything and taking your time. The base is allowed to take damage, just not you.

National Icon: Reach level 20. Just reach level 20 on a single character. Although I write "just", you will have completed at least the normal and insane playthrough, long before you reach level 20. So play some coop or your favourite level, this will take quite some time.

Defenders of Freedom: Reach level 20 with all player characters. Right, remember when I said it takes quite some time? It really takes quite some time. Take this moment to try to complete insane mode with all four characters.

Still easy achievements
Although these achievements are still easy, it requires some progress in the game. These achievements require you to kill/freeze/ignite multiple enemies within a short time period. The perfect level to do this is level 7. The first wave spawns a lot of drones. Do not aggro them and let them all walk towards your base and cluster up. Note that this tactic almost certainly results in a level fail, but you will get your achievements.

Cranked!: Destroy 20 enemies within 1 second. In level 7 normal mode, before the first wave starts. Using the TNT Launcher, place all five charges strategically around your base. Let all the drones walk to the base and detonate the TNT. I personally obtained this during my insane playthrough of level 7. During one of the later waves loads and loads of Raiders will spawn. These can be frozen by the repetitive use of the Freeze Ray secondary. When the Raiders stop spawning, blow them all up with a single use of five TNT charges.

Cryo Baby: Throw 10 emeies at once with the Cryo Blaster secondary attack. The Drones of the first wave of level 7 die with a single use of the Cryo Blasters secondary attack on normal mode and won't count. Start level 7 on hard mode, let the Drones group up and then use the Cryo Blaster. It might be possible to do this in Invasion Mode too. However, I already have this achievement and can not check this. It might also not work due to the fact that the other Invasion mode achievements do not work.

Great Balls of Fire: Set fire to 10 enemies simultaneously. I had trouble obtaining this achievement with the Spaceman. The other three characters however can use the first modifier of the Grenade Launcher which ignites enemies. Just as before, level 7 on normal mode, during the first wave, let them group at your base and light them on fire.

Ice to Meet You: Freeze 10 enemies within 1 second. This achievement should come naturally during your normal/insane playthrough. Otherwise, play level 7 on normal mode, let everything group up at the base and freeze them all using for example the secondary fire of the Freeze Ray.

Sharpshooter: Destroy 10 enemies with the Rifle in 5 seconds. Play level 7 on normal mode, let everything group up at the base and fire away. If you are having trouble, try lowering the hp of all units first.

Slugger: Destroy 5 flying enemies in 5 seconds with the shotgun. This is one of the harder achievements of this set, mainly because it can not be completed within 10 seconds of starting a level. Level 7 on normal mode spawns loads of Raiders. Try lowering their hp and grouping them up first, by using the secondary fire of the Freeze Ray.
Invasion Mode
As of writing this guide, the two achievements for Invasion Mode are bugged. However, for the sake of completeness, and if the devs ever fix these, a strategy to obtain these will be included.

Negative Perspiration: Survive 10 waves of Invasion Mode.

Cloud Nine: Survive to wave 20 in Invasion Mode on hard.


Invasion Mode has different maps than the campaign, and the achievements require at most a single map to be completed up to wave 20 on hard mode. For this reason you only have to win Mean Street on hard mode up to wave 20.
Invasion mode has a different tactic than the insane tactic below, and is based on a youtube video I saw from PurrPleeHaze. While I tried to ask for permission, there was no response. Hence this tactic and video is included without his/her permission. All credits for this tactic go towards PurrPleehaze.



One of the main differences between campaign and invasion, is that you can repair your base for $500 in between waves. The other difference is the three buffs/debuffs received each wave. Most of the time these will be a debuff. However, the only one that really matters is the Asteroid Storm. These asteroids are just like the bombs thrown from the Stalker. Get hit and die and watch your base take damage. If you dodge all of these, you should be able to get to wave 20, otherwise, practise your dodge abilities.

The tactic involves using the first modification of the Freeze Ray and the second modification of the Cryo Blaster.
A single NitroFreezer with the first modification is to be placed on the east side as far north as possible.
At the start, a single Tesla Trooper with the second modification is placed in the center as far north as possible.
In three columns around the Tesla Trooper, Anti-Air Cannons with the second modification are to be placed.
During the coming waves, the amount of Anti-Air Cannons increases until you have a nice defense of around 8-11 cannons. Due to the second modification, these deal enough damage to kill all flying martians and the bosses.
The Tesla Trooper is mostly a meat shield, if you find yourself in need of more, build a few more troopers.

I was able to get to wave 23 with the use of 3 NitroFreezers, 11 Anti-Air Cannons and 3 Tesla Troopers.

During the 15 seconds in between waves, you can check which enemies spawn. If you find that there are no air or ground units, sell either the cannons/troopers and buy the ones that are needed.
Using the Spaceman with all its freezing effects, the only challenges are the bosses on waves 5/10/15/20. Waves 5 and 15 produce a Juggernaut, which you can easily kill before it even reaches your base. Waves 10 and 20 produce a Stalker. These waves are the hardest of all and death will result in a 15 second respawn timer, in which the Stalker walks towards your base to destroy it. Dodging and a clever use of your ultimate ability should suffice and ensure victory.
Insane walkthrough
The remaining achievements to mention are:

Bring Him Down!: Defeat the Juggernaut. Killed during level 6. This might be possible during Invasion Mode wave 5, can't confirm as I already have the achievement.

Clanked!: Defeat the Stalker. Killed during level 12. This can aslo be done during Invasion Mode wave 10, thanks to MGMax for confirming.

By Patschge: Both are possible in invasion mode, even coop. But it counts only for the player with the killing blow. But they respawn every 10 waves. So you complete group can get them in one run^^

Square: Complete every map on normal difficulty. See below.

Earth's Protector: Complete every map on hard. See below.

Fortified!: Complete all maps on insane. See below.


As completing all levels on insane awards the hard achievement too, it is only needed to complete all 12 levels on insane to obtain these five achievements. However, insane mode is only unlocked after completing all 12 levels on normal/hard first. Hence two playthroughs are needed in order to obtain these achievements.
Note that in insane mode death is final. This means that dying almost always ensure a restart of the level is needed. Note also that there is a forced 5 seconds timer between each wave, this means you have only 5 seconds to sell a structure if you have misplaced it or want to transfer it. As building a structure can be done during the wave itself, try to take your time building (not too much!), so you don't have to hurry in between waves.
In insane mode the martians have much more hp. The amount of hp on insane mode is comperable to 4man normal mode.

I present below my method for clearing all 12 levels. I do not say this is the only method nor the best method, but I believe this is the most fool proof method. This is meant to be a solo walkthrough, but I am sure it can be extended to a 2man team. The game is much much harder with multiple people, and I doubt the final level can be completed on insane with the average 4man team. As a disclaimer, telling someone or reading something does not guarantee succes. As with any shooter game, if you can not aim and miss half your shots, you may not be able to complete insane mode. However, as most levels, even on insane mode, can have multiple spawn points shut down entirely, without your help, you might be able to still complete normal mode, which means that even when you can't aim, you could still obtain 19/23 achievements. For example, the first few levels can be completed without firing a single shot on normal mode .


In the walkthrough below, only the following weapons are used by the Spaceman:

Freeze Ray-First modifier. Your main source of damage is your primary fire. This is to be used 90% of the time. Note that the projectile is not influced by gravity, it can travel from one side of the map to the other in a single line. The secondary fire leaves a small blizzard which freezes any enemies that come in contact. This can be used if you feel like you are being overwelhmed to cluster up units for your other weapon.
TNT Launcher-First modifier. While the Freeze Ray is excellent for single target damage, sometimes large clusters of martians come. This is where your TNT Launcher comes into play. It has five ammunition. Fire with left mouse and detonate with the right mouse button. If your clip is empty a detonation will also incur when you reload or try to fire another time.
Try to learn how many shots you need to kill something. This will result in not wasting shots and having more time for other kills. For example, can I blow up multiple Drones with a single TNT? Do I need exactly 8 shots with my Freeze Ray to kill an Exterminator?

The general rule for weapons is, fire your entire ammunation, initiate a reload, switch weapon and start again.

The following structures are used by the Spaceman:

NitroFreezer-Second modifier. This will consist of 99% of your structures. These are cheap and semi-reliable. They cost $300 and freeze all units in a straight line for a few seconds. Note that the range is a little bit larger than indicated when placing these. This means that when properly placed, it can hit both Drones and Raiders at the same time. As this structure deals ice damage, it both freezes lesser martians and slows annihilators. With the second modifier, around 4-5 NitroFreezers kill a single unit. This costs only $1500, super cheap. This might sound bad, but keep in mind that this deals aoe damage for a few seconds and freezes the target. This means that around 6-8 NitroFreezers will kill Drones/Invaders/Disruptors/Barricades and Raiders. Yes, these are great against Disruptors too. Furthermore, they significantly weaken Annihilators. This means the only real job you have is killing Exterminators/Flying Saucers, while helping to take down Annihilators/Disruptors.
Anti-Air Cannon-First and Second modifier. As the NitroFreezer does not really help with the high flying martians, the Anti-Air Cannon comes into perfect use. The first modifier is used on any non-boss level. The extra range helps to kill those flyers. On the boss levels, the second modifier helps to deal you damage, if you incline to use it.
Tesla Trooper-Second modifier. These will mainly be used during the boss levels, although sometimes you don't have any space to place more NitroFreezers, which means you might as well place these on the field.
Exhaust-Second modifier. This is a suggest alternative in some maps. It works the same as the NitroFreezer, except it ignites martians instead of freezing. The reason this is not the preferred construction, is that it costs more, and ice damage stops the ignite damage. As your primary weapon deals ice damage, the use is limited.


Let's take a step back and discuss my mathematics on those NitroFreezers. I hear you think: "You said I only need 4-5 to kill a single unit, why are you then saying I need to place 6-8?". You make a valid point, thank you for bringing this up. The NitroFreezer blows icy air for a few seconds, but after that it has to reload. This means a martian can just walk past a reloading Freezer. Hence we use 'extra' NitroFreezers to compensate for this.
Now on the placement of these NitroFreezers. To simply the placement, let's consider blocks. One block is the size of a NitroFreezer. Your average wall is two blocks high and usually at least two blocks wide. Let's first discuss the height. The NitroFreezer has more range than is shown, so placing it on the ground is a waste, the same holds for placing it on the top. Hence the NitroFreezer is best placed such that there is space both below and above the Freezer. This way it will hit both Drones and Raiders. Now for the width. As the name suggests, a NitroFreezer freezes the martians. However, there is a small immunity cd on this effect. Hence to make full use of the NitroFreezer, they are best placed one block away from eachother. This means that you leave at least a solid block between each NitroFreezer. A wall of 2x3 blocks has room for two Freezers. Do take in mind that this also means any NitroFreezer not on the same wall. If there is a NitroFreezer on the opposite site of a path, it should still be at least one block away. This can sometimes easier be seen by the range indicator only visible in between waves. Do also keep in mind that when I talk about 'filling up' in the walkthrough, this still means at least one block in between, not filling a 2x3 wall with 6 NitroFreezers, filling it up is still only 2 Freezers.
Levels 1-6
Level: 1.
Structures: NitroFreezer.
Comments: If you are having a hard time in this level, you might wanna play another game. 100% base achieveable.
Placement: Anywhere on the wall will suffice.

Level: 2.
Structures: NitroFreezer.
Comments: Two different spawn points, both will spawn roughly the same amount of martians.
Placement: Place around 4 or 5 on the eastern spawnpoint, so no martian walks past, then focus all money and efforts on the western spawnpoint. 100% base achieveable.

Level: 3.
Structures: NitroFreezer.
Comments: First flying enemies here, remember to place the Freezer not directly on the ground. Other than that, this is the same as level 2.
Placement: Place around 4 or 5 on the eastern spawnpoint, so no martian walks past, then focus all money and efforts on the western spawnpoint. 100% base achieveable.

Level: 4.
Structures: NitroFreezer.
Comments: The first harder level, three differernt spawn points. However, the south spawnpoint splits its units to join forces with both the western and northern spawnpoint. This means there are only two entrance points to your base. One is directly west of the base and the other is directly north-east of your base. Your main task is focussing the Disruptors that spawn for the first time in this level, along with the Exterminators, as your structures will not do this for you.
Placement: Focus on filling the entire north-east entrance point with NitroFreezers (mind the block placement). Ones that entrance is done, do the same with the western entrance. At this point you can either place an Anti-Air cannon or two at the north-east entrance if you brought those, or place more NitroFreezers closer to one of the spawnpoints. You could even place a few Tesla Troopers if you really want to use those. 100% base achieveable.

Level: 5.
Structures: NitroFreezer.
Comments: The first time you will encounter two bases, if one of those dies you lose. Two spawn points, where the eastern spawn point splits into two paths. The only real problem in this level are the Annihilators, but as you have plenty of freeze/slow, you should be fine. Just watch the map for any large circle that is rapidly rolling towards your base.
Placement: Place two NitroFreezers on each side of the long straight path of the eastern spawnpoint. This should suffice for the first two waves if you help. Place any and all other NitroFreezers at the western spawnpoint. Once you have filled up that entire (short) path, no enemies should pass (except low hp Annihilators) and you can focus on the eastern spawnpoint. After that, keep placing NitroFreezers on either the northern or southern pathway, while you deal with the other (and Annihilators). 100% base achieveable.

Level: 6.
Structures: NitroFreezer, Anti-Air Cannon, Tesla Trooper.
Comments: This is your first boss level, featuring the Juggernaut. It has a shield which regenerates when it reaches zero. During this regenerating time, the Juggernaut stops moving and charges a large aoe, visible by an animation on the ground. Do not mind the amount of spawnpoints, only two really matter. The first is the central north one, this is where the boss will spawn during the final part of wave 3. The second is the eastern spawnpoint, where almost all flying units will come from. There are two different strategies for this map, one involves massing Anti-Air Cannons with the second modification, the other involves massing Tesla Troopers. Three different routes can be distinguished. From the first crossroad north of your base, left entails mostly ground units with the occasional Annihilator, right entails mostly air units, the central path has very few units, but one of those is the boss.
Placement 1: Place 4 NitroFreezers in both the left and right pathways. Then start massing Anti-Air Cannons in the center of the crossroad. This should deal with all air units and most weaker ground units. This leaves you for all Annihilators. During the boss phase, you can shoot at the boss from far away if you have a clear line of sight. You can't really get close to him until most additional martians are dealt with. Try to burst him down while he is in range of your Anti-Air Cannons. 100% base achieveable, although it is more likely to be around 99%.
Placement 2: Place 4 NitroFreezers in the left pathway and 1-3 in the right pathway. Then start massing Tesla Troopers. If you construct them directly on the crossroads, let them defend using the command 4. If you construct them in the very center of the map, let them defend using the command 3 in the middle of the crossroads. The placement of construction matters, as this is where the troops run back to if they 'die'. You should mainly have to deal with leftover Annihilators as everything else will die. During the boss phase, you can walk up to the boss and use both weapons to kill him. When most additional martians are dead, command your tesla troops with the command 3 to get in attack range of the boss. Do not forget to move them out of the explosion range when his shield is down, and then back in range. 100% base achieveable, although it is more likely to be around 99%.
Levels 7-10,12
Level: 7.
Structures: NitroFreezer.
Comments: This is mostly a map for aoe weapons, as this level spawns loads of low hp martians. The southern spawnpoint is by far the most dangerous spawnpoint in this map. West and north spawn only Drones and Invaders, while the southern spawnpoint also includes (loads) of Raiders. This level involved the most running around and shooting of all the levels. 100% base achieveable, and by far my favourite map.
Placement 1: Place 5-6 NitroFreezers on the western spawnpoint, and just forget that it ever existed. Deal with the other two spawnpoints yourself. Keep placing NitroFreezers on the southern spawnpoint until it can clear all Raiders without your help (5-8 NitroFreezers), then start placing during the last (two) waves NitroFreezers at the northern spawnpoint.
Placement 2: Reverse the initial placement of the NitroFreezers with the southern spawnpoint, and deal with the western and northern spawnpoints yourself.

Level: 8.
Structures: NitroFreezer, Anti-Air Cannon, Tesla Trooper.
Comments: This is a rather straightforward level. Three spawnpoints with a short straight path to three bases. For the first time Barriers will spawn, which block all damage from the front, however NitroFreezers' damage come from the side, so Barriers do not counter them. The annoying part of this level are the Disruptors and the Exterminators. You will be mostly running between all three pathways, killing Disruptors and Exterminators, along with the occassional martian that passed your defenses and attacks your base. 100% base not achieveable. I tried to 100% multiple times, but this simple tactic does achieve that. 95% base is achieveable.
Placement: In the end you will have enough money to place around 8 NitroFreezers in each of the three pathways. As the rightmost pathway entails only ground units, this should suffice (as long as you help with the Disruptors). The central and left pathway also include Exterminators, which is out of range of your NitroFreezers. As you will have some spare cash, place either Anti-Air Cannons to deal with the Exterminators (provided the Disruptors do not disable them), or place Tesla Troopers at those two bases to help defend. I started with building 4-5 NitroFreezers in the leftmost pathway, then the rightmost, then the middle.

Level: 9.
Structures: NitroFreezer, Anti-Air Cannon
Comments: In my opinion the second hardest level of all 12. Three spawnpoints. The northern spawnpoint entails mostly ground units up to Disruptors. You will have to deal with anything that walks past here, along with the large clusters of Disruptors. The southern spawnpoint has all different kind of units. From Exterminators to Disruptors and Drones/Invaders. You will have to manually deal with almost all of them. The western spawnpoint entails mostly Raiders. The main defenses are build around this spawnpoint, and you should only have to do anything here when Disruptors spawn. 100% base might be achieveable, if everything works out perfectly. It is more llikely this will be 99%.
Placement: Fill up the entire northern spawnpoint with NitroFreezers. Deal with the other two spawnpoints yourself, along with the occasional runaway from the northern spawnpoint. Slowly build up the western NitroFreezer defense so no Raider will pass that defense. Deal with the southern spawnpoint and the occasional runaway from the other two spawnpoint. Then, start building 2-4 Anti-Air Cannons at the T-section of the southern spawnpoint, along with 2-4 NitroFreezers. At this point, all defenses should deal with the majority of the martians. Any excess money should be spent on placing NitroFreezers along pathways where the most runaways move to. Your main objective is now killing the large clusters of Disruptors.

Level: 10.
Structures: NitroFreezer, Anti-Air Cannon, Exhaust.
Comments: The level looks a lot more complicated than it is. The two northern spawnpoints converge together in a single pathway, which should be cleared by your defenses. The southern spawnpoints, referred to as east and west, will be your main concern. The western spawnpoint spawns loads of Raiders, while the eastern mainly uses Invaders. Your defenses should deal with both of those later on. The main threat will be the Annihilators which will spawn in rather large numbers during the final few waves. 100% base achieveable if you are quick enough. Sometimes an Annihilator will deal a single hit to your base before you can freeze them.
Placement: Fill the top pathway with around 5-8 NitroFreezers and 2-3 Anti-Air Cannons. This should deal with everything for the entire game, except the occasional Barrier and Annihilator. After the top path is secure, start placing NitroFreezers at the western spawnpoint, so no Raider will come to your base. Then secure the eastern entrance with more NitroFreezers. At this point you will have some extra cash, which you may or may not use. As the only thing left to do is kill all Annihilators that approach your base. As a side note, if you feel like the north pathway is not secured by the NitroFreezers, you could replace those with three Exhausts with the second modification.

Level: 12.
Structures: Tesla Trooper, Anti-Air Cannon-first modification.
Comments: The last level, which features the final boss, the Stalker. The level consists of a single wave, which spawns all variety of units. Even though the level is a single wave, this single wave consists of multiple waves. These are not at all dangerous and should fall rather easily. The hardest wave is the one after the Raider mass, in which your ultimate should help plenty. The boss has two attacks, his asteroid attack, which is similar to Invasion Mode, and three shots. The only hard part in this level is not dying, as in insane mode you will not respawn. Other than that, it is straightforward.100% base achieveable.
Placement: Place 0-2 Anti-Air Cannons as far north possible, such that both cover the entire walkway. After that, just mass Tesla Troopers. Use your Freezing Ray secondary to cluster the martians up and let them all die by the Tesla Troopers. Do not use the 3 command, as they will all die and you will lose all your damage. Just let them defend with the 4 command. When the boss spawns, use the 3 command to always keep your Tesla Troopers in range of the boss, while you DO NOT DIE and kill the Disruptors the boss spawns, while occasionally firing at the boss too.
Level 11
Level 11 is the hardest level in the game in my opinion, and I do not have a proper simple walkthrough for it. Hence it deserves a spot on its own. If anyone knows a (simple) better tactic for this level on insane mode, please post this in the comments so others can easily obtain the achievements too. If your solution is not for the Spaceman, keep in mind that the campaign progress is not shared with the other characters.

Level: 11.
Structures: Anti-Air Cannon, NitroFreezer, Exhaust.
Comments: The hardest level in the game by far in my opinion. The level consists of four spawnpoints. Two north, which spawn ground units walking towards your southern base, one east which spawns air units flying towards your western base, and one west which spawns air units flying towards your eastern base. The main threat are the two flying spawnpoints, which have only limit kill zones. The threat from the two north spawn points are the martians which kill you, so you can not kill the air units, or the Disruptors which disable your Anti-Air Cannons, so they can not kill the air units. So far I have not said anything about using your ultimate, as all previous levels are beatable without it. This time it will come in play huge time. Your ultimate makes you invulnerable to damage, while also freezing any martian in an area around you. Use this to stop flying units + ground units from killing you, whenever you are in a tight spot. 100% base NOT achieveable.
Placement: There are four 'crossroads', where the flying units meet the ground units. At the start of the game, place an Anti-Air Cannon in both the north-east and south-east crossroads. At the northeast crossroads, the martians come in from the east, at the south of that pathway, it is possible to place a NitroFreezer up high on that wall, such that it freezes all flying units when they come in range of the Anti-Air Cannon. Keep placing Anti-Air Cannons at the crossroads until all crossroads have a single Anti-Air Cannon, then place another one at both eastern crossroads. At this point the ground units become more of a problem. Start placing a few NitroFreezers to slow down the ground martians. Alternatively, for $200 more, place Exhausts with the second modification. You would need at most two on each pathway to thin them out.
Conclusion
Even when you suck at shooters, you should still be able to get 19/23 achievements.
I am not planning on making any further progress with this guide, unless multiple people ask for more detailed things in the comment section.
I usually play steam in offline mode, so any questsions or improvements should be redirected to the comment section.

Thank you for reading, I hope I was of help. Gl & Hf, get all the achievements.
36 Comments
Player 28 May, 2021 @ 2:34am 
Having same issue as Meush where I can't get Beatnik achievement. Reporting For Duty popped as it should.
Lord Vampair 16 May, 2021 @ 11:01pm 
I can confirm: Invasion mode achievements are still bugged.
MefistoCKM 18 Jan, 2021 @ 4:24am 
@ ❀ ❃ Alice ❃ ❀

You are right! I played on co-op (only I was in the game) and I got "They Shall Not Pass" after 1st try. ThX. :hwstar:
Doom Brutus  [author] 23 May, 2019 @ 11:55pm 
That strategy also seems solid. The problem with this strategy might be finding an online game in the first place.
❀ ❃ Alice ❃ ❀ 23 May, 2019 @ 10:47am 
Meush. I do not know if it will help you or not. So much time has passed.
"They Shall Not Pass" also did not achieve the achievement. In general, try not playing solo mode. Try to play in Co-op mode. I was immediately given this achievement
Doom Brutus  [author] 18 Apr, 2019 @ 10:25am 
Thx for confirming the achievement can be obtained in invasion mode.
I believe the invasion achievements are still bugged, so it is not your fault.
Maximus 17 Apr, 2019 @ 12:40pm 
Clanked can be achieved in invasion mode. I didnt unlock the 'complete wave 10 in invasion mode' achievement though, possibly because I died/respawned in those 10 waves but not sure.
Meush 7 Nov, 2018 @ 3:24am 
No i don't have it and don't playing offline :/ have try uninstall/install, with 4 caracters, with infantery, without infantery, check folder of the game and on the second and third map
Doom Brutus  [author] 7 Nov, 2018 @ 2:23am 
The only things I can think of, are that you already have the achievement or that you are playing in offline mode.
Meush 7 Nov, 2018 @ 1:35am 
Yeah trying a few time... for beatnik look this http://image.noelshack.com/fichiers/2018/45/3/1541583286-334210-20181107103258-2.png

You can see 0 structure kill, but no achievement