Fight Club Cheats

Unlock Abe Lincoln:
Finish the game in arcade mode with all characters.

Unlock Fred Durst:
Finish the game in story mode.

Unlock Halo:
Finish the game in arcade mode with Fred Durst to unlock Halo the bartender.

Unlock Richard Chesler:
Get 15 survival mode wins.

Movies:
Finish the game in arcade mode with various characters to unlock movies.

Alternate costumes:
Press Square when choosing a fighter at the selection screen.

Breaking Bones:
Instead of having to use down and the other buttons to break bones you can just press the black button or the white button. The white button breaks your opponents neck/back. And the black button breaks your opponents leg.
User Cheat by Pugnacious999

Faster CDP gain:
Survival mode allows you to gain 1,000 CDP points on your first victory, and it increases by 250 points with each win. However, the more fights you win, the tougher your enemy becomes.
User Cheat by rappaport

Opponent fighting styles:
A martial artist is a fast punch and kicker. Brawlers do heavy damage with grapples, but are very slow at punching/kicking. The other types are a mix of these two and have respective differences, such as heavy punch/kicks but slow punch/kicks, etc.

Alternate victory pose:
Immediately after you fight Lou in arcade mode, your character does a little victory pose. However, when you defeat him using a martial arts fighter (for example, Tyler), you will gather electricity in your hands. As your character is finishing it off, he generates electricity in the palms of his hands.