Level select
At the main menu, highlight the "New Game" option. Hold L1 + R2 + Circle + Square and press Select. Highlight the "New Game" option again and press Right to select a level, then press X to begin the game.

Walk through walls
At the main menu, hold L1 + R2 + Circle + Square and press Select. If you entered the code correctly, a message will appear.

Infinite lives
Pause the game, then hold L1 + R2 + Circle + Square and press Select. Select the "Cheats" option to access an option for infinite lives. -From: AcoiraC7 @ aol.com

Infinite continues
Pause the game, then press L1 + R2 + Circle + Square and press Select. Select the "Cheats" option, then press L1 + R1 + R2 + Select at the cheats menu.

One-hit kills
Pause the game, then press L1 + R2 + Circle + Square and press Select. Select the "Cheats" option, then press L1 + L2 + R1 + Square + Select at the cheats menu.

Super power-ups
Pause the game, then press L1 + R2 + Circle + Square and press Select. Select the "Cheats" option, then press L1 + R1 + Select at the cheats menu. Collect any power up to increase the corresponding attribute to 100%.

Invincible enemies
Pause the game, then press L1 + R2 + Circle + Square and press Select. Select the "Cheats" option, then press Square + Circle + Select at the cheats menu. An option that will make your enemies invincible will appear on the cheats menu.

Display remaining enemy life
Pause the game, then press L1 + R2 + Circle + Square and press Select. Select the "Cheats" option, then press L2 + R2 + Square + Select at the cheats menu.

Hidden artwork
Place the game disc in a PC compatible CD-ROM drive to find the game's logo in .JPG format.