Enter the options menu, click on the lower left corner of the screen, then enter one of the following codes to activate the corresponding cheat function:
Result
Cheat Code
Invincibility BEEFCAKE
All weapons with infinite ammo SWEET
Big head mode [Note] EGOTRIP
Display frame rate FRAMERATE
Note: This code only works in single player mode.
-From: nightmare_52@hotmail.com and IHveNoSoul@aol.com