Killing Floor 2 is a cooperative first-person survival horror game developed by Tripwire Interactive. The game is based on events of the first Killing Floor. A biotech corporation Horzine attempts to create military clones, yet something goes wrong and now the mutant clones are spread all around Europe. Governments collapse and the infrastructure is almost non-existent. Up to 6 players spawn on the map in order to kill the boss. The players have to hold out 4, 7 or 10 waves of enemies after w...