New Zealand Story (PC)
Pause the game, and press 'M'. You should hear a laser gun sound. Type 'MOTHERF**KENKIWIB**TARDS' (fill in the stars...) Unlimited lives are yours. Or, on level 2.4, stand at the entrance to the room with the giant octopus is located and fire to the right a few times. A warp will appear that will take you the beginning of level 3.1.