DeBug Mode:
Press [F10] at one of the logo screens to enter the options menu. Then, type DIP (case-sensitive) to display the debug switch menu. Activate the corresponding DIP switch to activate the corresponding effect.

Switch	Effect
0	Unknown
1	Toggle blood
2	Toggle sound
3	Toggle comic book offer
4	Toggle fatalities
5	Toggle unlimited credits
6	Unknown
7	Unknown
8	Toggle voice

Cheat mode:
Type aiculedssul at the copyright screen, then press [F9] at the Acclaim logo.

Unlimited credits:
Wait until the countdown at the continue screen begins. Press [F2] to start a two player game, then press [F1] while in the two player menu. After you defeat the player two you will continue the game at the place you left off without losing a credit.