Killing Floor 2 ramps up the gore with a proprietary, high powered persistent blood system bringing new levels of fidelity to the genre. Six player co-op or solo play. A multitude of varied playable characters await for players to choose from. Terrifying Zeds New enemies and fan favourites from the original game. Unique Blend Of Weaponry From modern militaristic assault rifles, brutal improvised makeshift weapons, classic historical guns, and off the wall Mad Scientist. Expanded Perk System Perks from the original game have been reimagined with more added to the fold.