Invincibility
While playing the game, press Select, then hold L1 + L2 + R1 + R2 + Square and press Left. If you entered the code correctly, you will hear a sound and a message will appear. Repeat the code to disable its effect.

Invisibility
While playing the game, press Select, then hold L1 + L2 + Square and press Left. If you entered the code correctly, you will hear a sound and a message will appear. Repeat the code to disable its effect.

Full ammunition
While playing the game, press Select, then hold R1 + Square and press Left. If you entered the code correctly, you will hear a sound and a message will appear. Note: This code will reset your current weapons to only those available during level 1. Repeat the code to disable its effect.

Heavy weapons with full ammunition
While playing the game, press Select, then hold L2 + R2 + Square and press Left. If you entered the code correctly, you will hear a sound and a message will appear. Repeat the code to disable its effect.

Melee weapons
While playing the game, press Select, then hold L1 + R1 + Square and press Left. If you entered the code correctly, you will hear a sound and a message will appear. Repeat the code to disable its effect.

No clipping mode
While playing the game, press Select, then hold L1 + L2 + R1 + Square and press Left. If you entered the code correctly, you will hear a sound and a message will appear. You may now walk through walls. Repeat the code to disable its effect.

No gravity
While playing the game, press Select, then hold L1 + L2 + R2 + Left + Square and press Start. If you entered the code correctly, you will hear a sound and a message will appear. Repeat the code to disable its effect.