Abraham Lincoln
Complete Arcade Mode as every character.
Fred Durst
Complete Story Mode.
Halo
Complete Arcade Mode as Fred Durst.
Richard Cheslar
Win at least 9 matches in Survival Mode.
Movies
Successfully complete the game in arcade mode with various characters to unlock movies.
Alternate costumes
Press Square when choosing a fighter at the selection screen.
Break bones
Get your opponent's life to a certain point (red zone). Then, press Up + Square + Triangle or Down + X + Square. This is useful when your goal is to break that person's arm.