this only works in versus mode, when you become a tank kill Zoey, Louis, Francis, and Bill
i play it with my boyfriend& friend
go to options, then secrets then cut the game off and when u get back on u should have 4 more characters instead of 3
Left 4 Dead 2 has more special infected zombies like Spitter, Jockey, Charger and Wandering Witch...L4D2 has melee weapons...
No you don't have to. The two games have a different story than the other.