Press ESC during game play and select "Options", then click in the lower left corner and enter one of the following codes to activate the corresponding cheat. Note: Some cheats are only available in single-player mode.

CHEAT FUNCTION - CHEAT CODE
Big enemy heads - egotrip
Invincibility - beefcake or cheesypoofs
All weapons with unlimited ammo - sweet
Display frame rate - framerate
Enable all codes - bobby bird

Use your radar scope to track incoming enemies by following the signs for directions (not the scope arrow).

You will get points if you don't kill innocent animals.