Invincibility:
Press Select during game play, then hold R1 + L1 + R2 + L2 + Square and press Left. A message and sound will confirm correct code entry. Repeat the code to disable its effect.

Full ammunition:
Press Select during game play, then hold R1 + Square and press Left. A message and sound will confirm correct code entry. Note: This code will reset your current weapons to only those available during level 1. Repeat the code to disable its effect.

Heavy weapons:
Press Select during game play, then hold L2 + R2 + Square and press Left. A message and sound will confirm correct code entry. Repeat the code to disable its effect.

Hand to hand weapons and explosives:
Press Select during game play, then hold L1 + R1 + Square and press Left. A message and sound will confirm correct code entry. Repeat the code to disable its effect.

No clipping:
Press Select during game play, then hold L1 + L2 + R1 + Square and press Left. A message and sound will confirm correct code entry. You may now walk through walls. Repeat the code to disable its effect.

No target:
Press Select during game play, then hold L1 + L2 + Square and press Left. A message and sound will confirm correct code entry. Repeat the code to disable its effect.

No gravity:
Press Select during game play, then hold L1 + L2 + R2 + Left + Square and press Start. A message and sound will confirm correct code entry. Repeat the code to disable its effect.