Enter one of the following codes to activate the corresponding cheat function.

Effect - Code

Activate all codes - FMNFB
Invincibility - EMERPUS
All available weapons in level - TEXAS
Unlimited ammunition - MADMAN
Level select - SELLOUT
Invisibility - SLLEWGH
Big head mode - HEID
Zoo mode - ZOO
Play as Raptor in multi-player deathmatch mode - RAPTOR
Demo mode and target mini-game - HUNTER