Cheat mode: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter GOLDENPIE as a code.
Invincibility: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter GODLY as a code.
All weapons: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter LOADED as a code.
Unlimited ammunition: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter SORTED as a code.
Level select: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter SKIPPY as a code.
Fast running: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter SONIC as a code. This allows running to be done at twice normal speed.
Female trooper in multi-player mode: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter GODDESS as a code.
Hive guard in multi-player mode: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter LEGGY as a code.
Volcano guard in multi-player mode: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter RUBBER as a code.
Egypt Fodder in multi-player mode: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter CLAW as a code.
Hive Fodder in multi-player mode: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter UGLY as a code.
Pen and ink mode: Pause game play and select the "Cheats" option on the menu. Select "Enter Cheat" and enter SKETCHY as a code. This allows the game to be played without any texture mapped polygons, which gives it a hand drawn appearance.