Invincibility
enter "ROCKSTAR" as a name. Then, press Start during the game and activate the new "Invulnerability" option.

Invincibility
Pause during a game, then hold L1 + L2 + R1 + R2 and press X, Triangle, Square, Circle.

Infinite ammunition
Pause during a game, then hold L1 + L2 + R1 + R2 and press Circle, Square, Triangle, X.

Full health
Pause during a game, then hold L1 + L2 + R1 + R2 and press Triangle (x2), X (x2).

Full ammunition
Pause during a game, then hold L1 + L2 + R1 + R2 and press X (x2), Triangle (x2).

Level select
Pause during a game, then hold L1 + L2 + R1 + R2 and press Triangle, Circle, Square (x2).

Level skip
Pause during a game, then hold L1 + L2 + R1 + R2 and press Circle, Square, X (x2).

First special weapon
Pause during a game, then hold L1 + L2 + R1 + R2 and press Triangle, X (x3).

Second special weapon
Pause during a game, then hold L1 + L2 + R1 + R2 and press X (x3), Triangle.

Heavy weapon
Pause during a game, then hold L1 + L2 + R1 + R2 and press Triangle, X, Square (x2).

Indestructible base
Pause during a game, then hold L1 + L2 + R1 + R2 and press X, Triangle (x2), X.

Easy gun build
Pause during a game, then hold L1 + L2 + R1 + R2 and press Circle (x2), X (x2).

Easy buddy build
Pause during a game, then hold L1 + L2 + R1 + R2 and press Circle (x2), X, Circle.

Animals do not attack
Pause during a game, then hold L1 + L2 + R1 + R2 and press Circle, Square (x2), Circle.

Big feet
Pause during a game, then hold L1 + L2 + R1 + R2 and press Triangle, Square (x2), X.

Big guns
Pause during a game, then hold L1 + L2 + R1 + R2 and press Triangle, Circle (x2), Triangle.

Instant shape build
Pause during a game, then hold L1 + L2 + R1 + R2 and press Square (x2), Circle (x2).

Rocket boots
Pause during a game, then hold L1 + L2 + R1 + R2 and press Triangle, Square (x2), Triangle.

Jet pack
Pause during a game, then hold L1 + L2 + R1 + R2 and press Square (x2), Triangle (x2).

All crates powered-up
Pause during a game, then hold L1 + L2 + R1 + R2 and press Circle, X (x2), Circle.

Glitch

Difficulty settings:
The programmers have the difficulties mixed up in the "Options" screen. Easy mode is supposed to be "Private", normal mode "Corporal" and hard mode "Sergeant". However, if you choose "Sergeant" you will get a much easier difficulty level. To set the difficulty correctly, use the following steps.

Easy: Go to "Options" and set the difficulty to "Sergeant".
Normal: Go to "Options" and set the difficulty to "Corporal".
Hard: Go to "Options" and set the difficulty to "Private".

Cheats