Stage Skip: At the password screen, enter the password GOLVL, followed by a number (for example, enter GOLVL24 and you will go to level 24).Highlight Accept, and press X.

Invincibility and Unlimited Ammo: At the title screen, highlight Options, then select the Enter Password option. At the password screen, enter the following password: 1GOTP1NK8C1DBOOTSON. Highlight Accept, and press X. The words "Cheats Activated" appear. Return to the main menu and youşll see a new option, Cheats. Highlight Cheats, and press X. This takes you to a cheat menu that includes invincibility and unlimited ammo.