A lot of you have been asking me which lanes to use.
Well I decided to write this guide to help you guys out!

First of all, you need to select 'Hell on Earth' difficulty, which can help you get more damage when you attack Zeds.

Do NOT use any mutators whatsoever, or your perk progress might not save!

Field medic: If you want to level up your Medic perk solo, just use the map KF-TestZSpawningZoneV30ULTIMATE[SOLO], choose between the 2 medic areas (depending on your Medic level) and enter the yellow circles to spawn Bots. When they're in contact with the toxic water, they'll start losing health. The most effective way to heal them and level up is to heal them with Medic grenades, because darts may sometimes fail. Just toss some medic grenades and press E to buy more. You can spawn more than 1 ♥♥♥, so you'll level up a LOT faster if you heal 4 or 5 bots at the same time with grenades (and even win the achievement "Explosion of Love"!) If you wanna level up online, just ask someone to go to the medic area, so you can heal him!

Support Specialist: The experience thresholds for support specialist are based on damage dealt with shotguns and weld points with doors. So, in other words, you need to get weld points and damage with shotguns. To get weld points, simply go to the 2 doors near the teleporters (in the place where your spawn), and start welding. You can use the auto-attack trick: Go to the doors, press your left mouse button to weld, and while doing so, press your TAB + SHIFT keys to enable the steam community in-game. This will allow you to weld even when you're not using the computer! To get damage, buy the AA12 and then go to the SCRAKE lane (not the Flesh Pound lane, because Flesh Pounds have more resistance over bullets, and thus you'll get less damage) and then just start spraying them with your AA12!

Sharpshooter: This one is pretty obvious :P Just go to the Headshot farming lane (Clot lane) buy the M99 or crossbow and shoot them in the head. I'd advise to get the M99 instead because it's somewhat easier to aim, and it can penetrate more clots (giggity).

Commando: This perk is the hardest perk to level up. This map helps a lot, however. To get damage with assault rifles, get the Rising Storm Tommy Gun (it's located near the trader when you spawn), go to the BLOAT lane and then headshot them. Press E to replenish your ammo while your reloading. To get the stalker kills, just go to the Stalker lane, use the same gun, and start spraying.

Berserker: This perk is quite easy to level up. Just go to the Gorefast or the Stalker lane (if you're playing this map online, use the Gorefast lane instead, so Commandos can get their Stalker kills) buy the katana or claymore, both of them are fine, enter the circle and then start killing them! You can take advantage of the auto-attack trick: press your Left mouse button to attack and then while doing so, press your TAB + SHIFT keys to enable the steam community in-game. Then you'll just keep attacking, even when you're not using the computer!

Firebug: This perk can be EXTREMELY easy to level up! Just buy the Flamethrower, go to the BLOAT lane (Bloats they have very little resistance to fire) and then just start spraying! Press E to replenish your ammo while you're reloading.

Demolition: This perk can also be INCREDIBILY easy to level up, thanks to the new Demolition's Power Leveling Lane (Siren lane) which allows you to get EXTREME damage, and when I say EXTREME, I really mean EXTREEEEME damage in each shot. Go there, get the LAW and then... I don't need to say more :P



Have fun! :D
If you have any questions, just ask!!!