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.
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.
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.
Invincibility
Pause the game, then hold L1 + R2 + Circle + Square and press Select. A "Cheats" menu will appear with a "Hero Unlimited Live" option
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%.
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.
Display remaining enemy life ...