Level select:
Submit the password BORNFREE or FAAIAKCE.

Invincibility:
Submit the password HARDBODY.

31 lives:
Submit the password VITAMINS.

Extra hearts for health:
Submit the password CORONARY.

Immortal enemies:
Submit the password EVILDEAD.

Rotate screen:
Submit the password TWISTEYE. Hold L1 + L2 and press Left or Right to rotate the screen. Press Down to return to normal.

Restart without quitting:
Submit the password INANDOUT. Allows you to quit in mid game and return to the level select screen to continue or restart on another level. To return to the main screen, repeat the quit procedure on the level select screen.

Warp body:
Submit the password THETHING or GENETICS. Hold L2 + Circle to cycle through different body shapes. Press L2 + X to return to normal.

Switch characters:
Submit the password BODYSWAP. Press Triangle while playing the game to switch characters.

Special weapons:
Submit the password OTTOFIRE. Allows access to special weapons that never run out of power.

Pinball screen:
Submit the password TOMMYBOY. Finish a level to reach a pinball screen. REMEMBER: this cannot be combined with the bonus screen code. Alternatively, enter KNCACKDE.

Bonus screen:
Submit the password CASHDASH. Finish a level to reach a bonus screen. REMEMBER: This cannot be combined with the pinball screen code.

Super password:
Submit the password ALMABHOL for 31 lives and 7 hearts at the final Boss.