This Mutation is an Survival Mutation where the L4D1 survivors are assisting the L4D2 survivors in surviving as long as they can.

Note: You have to play on L4D2 Survivor maps in order for it to function. (Unless there'll be a way to set "SurvivorSet = 2" in VScripts).

Please check it out and let me know what you think.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=130408814