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Class-Based Mutation

This is a coop mutation. You will be assigned to a class according to the character you choose. Each class has their unique ability and loadout.

There are 4 classes in this mutation, Assault, Medic, Engineer and Sniper. See images for their loadouts.

Medic
Shove at your teammates to heal them for 7 points. This doesn't reset their down count.
You recover your health for 1 point every 4 seconds.
*If the medic is controlled by a bot, it will try to get close to the injured survivors and heal them (4 points per second) by standing near them. It's still pretty stupid though.

Assault
You get some health buffer whenever a revival happens. You also get a little health buffer from your common kills.
*if assault is controlled by a bot, it will try to stay close to the medic.

Engineer
Each time you pickup ammo from a new ammo pile outside the starting area. You might get a M60 or a granade launcher or a chainsaw.

Sniper
Each time you deal damage to specials (except witch) with sniper rifles you earn damage bonus against them. This bonus resets every chapter.

Environment
Most of items lying around the map are removed except Ammo Pile, Adrenaline, Chainsaw and Granade Launcher.

Before leaving the saferoom
At the beginning of each chapter, a player has to SHOVE at something (wall, floor, etc...). Doing this will enable survivors ability and will give team a new set of loadouts. If you still have an item in a slot, you won't get a second. Don't forget to use all available items. You get new ones in the next chapter anyway.

Known Bug
After you launched the game, the first campaign you play shouldn't have any problem. But for the next one, medic's ability will not activate. Quit and relaunch the game everytime you want to start another campaign.