|-| Mutants (1)= Main article: Mutants Mutants have a lot of health points (starting at 2000), but they can only use melee range attacks (their own claws or the Mutation Spike). The two "host" mutants automatically starts at berserk level, all other infected mutants will start at normal level and have to work their way up to use their special skills. Mutants can also evolve, absorb or recover health if they want to survive as much as they can. When mutants are evolving, they gain few more health points and will eventually be able to use special skills depending of their current mutant.