So I just played through this campaign and noted down a bunch of feedback to it, but due to Steam's character limit for comments I figured a thread would be more adequate. This'll allow others to post feedback in more detail as well.

Let me start off by saying that overall the campaign is really solid. It has a great setting, innovative ideas, and each map feels unique and different while still making sense and having good transitions.
From the thematic point of view, I cannot complain, it's absolutely flawless.

I also want to emphasize that I absolutely LOVED the finale. Pushing through the tunnel is quite difficult, and I would suggest a wider area to push through would be better, but the fake-out escape with the helicopter crashing is something I've always wanted to do myself, and seeing it in action was amazing, especially with the tank and exploding car.
I would add a few more gascans, since those can be used at any point if survivors need a break to heal up or catch a breath, it allows players to essentially pick where they want to wait for a moment.

Now I'll get to individual level feedback. Keep in mind although it contains a lot of negative points, the campaign is definitely really good and enjoyable, so don't get discouraged.

- The intro chatter is weird, it feels like the survivors are talking way too much, I'd try to keep such saferoom chatter a bit more limited.
- The smoke in map 1, right outside of the saferoom, is way too strong. It makes you almost completely blind and is really annoying.
- There's no reason to have all that smoke outdoors, it doesn't add to the map (as it is already stormy) and it just makes it harder to see, I would remove it completely.
- There's a random helicopter sound while indoors, doesn't really make any sense nor does it serve a purpose.
- I like the implementation of the rainstorm, but you should make sure that the storm is dimmed when you're under a roof or indoors, like Hard Rain does it.
- My framerate averages 80FPS on this map, whereas I usually get 300 FPS on valve maps. It even dropped as low as 40FPS - It needs a lot of optimization. I suggest checking out some tutorials on optimizing maps.
- The navmesh needs fixing, infected get stuck in many places (this applies to other maps as well). If you need a reliable editor I can highly recommend my friend Salakirby, he's experienced, very reliable, and friendly.


- Louis is talking... but he's nowhere to be seen?
- There was a random witch death sound right outside the saferoom.
- There was another random helicopter sound outside the saferoom, like on map 1.
- The indoor storm sounds are so much better on this map compared to the previous map.
- Why is there a T-posing louis at the top of some random stairs?
- I'd lower the fog density a bit, or increase it's range slightly, since I couldn't see the helicopter flyover due to the fog. You may also want to use one of the smoother pre-existing animations for it or create a new helicopter animations, since those will always look better than path_tracks.
- In the alley where the light turns on, an invisible wall blocks survivors from moving forwards. In general, don't use invisible walls to prevent survivor progress - always make sure there is something visually blocking off the path. In this case, you could do what Dead before Dawn did and have a generic survivor who shoots at the ground in front of you shortly after the light turns on, perhaps with some voicelines to indicate that players can't pass there, maybe saying something like "stay away!".
Whitaker has a good line for such a scenario, it's comeupstairslongerb04 - this'll work even better if you add a little store to the area below.
- Now Bill is randomly talking out of nowhere?
- The ATM alarms were a big cause of frustration. Granted, i didn't have the game instructor on, but it would be nice if activating one of the ATM's would shut down the other one next to it, so you don't risk accidentally setting off the 2nd one right as the horde wears off because a boomer wandered out from around the corner.
- The saferoom tank can be implemented better. Currently it warps/pushes the player backwards after interacting with the door and it happens without any warning.
Hearing some growling and thumping just before getting close to the door would warn players, and perhaps having the tank bust out when the survivors reach a specific proximity would be better, rather than requiring a player to interact with it.

- I really liked the mini-finale design in the warehouse. It could be improved by designing it a bit more like the sacrifice's finale with more horde and more supplies.
- The map 3 crash occurred even though I have a good PC, it's likely related to map logic. Still occurred with lowest graphics, so I skipped the rest of this map.

- Here again - Don't use invisible walls to block players, always have a prop to visually block off a path. For this gate you can easily solve this by using a func_movelinear that opens up after interacting with one of the monitors.
- The first electric box is highlighted before players need to interact with it. This caused some confusion.
- The fireaxe in the tree can't be picked up, I recommend having weapons always obtainable, rather than just making them a decorational prop.
- I have no clue where I'm supposed to go after turning on the power, the event area needs a clearer sense of direction, perhaps with some lights starting up to signal the next area to move to, and shutting down once that part of the objective is completed.
- Why is a disembodied Zoey talking out of nowhere?

- Some ladders are nonsolid and not climbable, feels weird. I'd probably make them solid or look broken just so they feel better.
- Avoid giving any weapons the "absorb all dropped weapons" flag, all it does is cause players to lose a gun they might've liked more by absorbing it. Valve is guilty of this as well and it's generally a bad idea unless you have an area with tons of guns like Whitaker's gunshop.
- Once again, invisible walls to stop players from accessing an area is bad design. Always have it visually blocked off in some way. For the finale you could require players to push a crate in order to jump over the bus, or something along those lines. Perhaps just do what Cold Stream does and use a different trigger to start the finale, that opens a gate or barrier.
- The helicopter crash was AWESOME!!!!
- The pipe bombs by the exit of the tunnel can be picked up 5 times each, I assume this was an oversight.


The L4D1 survivors implementation feels forced and is quite frankly pointless - they don't add anything and their disembodies voices are just... weird. The campaign wouldn't lose anything if they were removed.
There's also the issue of invisible walls blocking players, not just in the instances I noted above, but in general - there's some areas in maps where there's a gap wide enough to fit through, but then an invisible wall blocks you from going there.

But overall, the map is pretty solid, you added a great deal of innovation and interesting designs.
The only other, more general issue for me is that maps can feel very cramped and claustrophobic at times, especially with the large amount of props per level. Sometimes simplicity is key, and there's a lot of unnecessary paths leading to dead ends.
Other than that, I hope to see more future campaigns or maps, and am always down to do beta testing if you need someone. Keep up the good work!