Army Men 3D Codes -

Invincibility:
Press Start to pause game play, then quickly press Square, Circle, L1, then hold L1 and press L2. Sarge will be invincible during the current level.

All weapons:
Press Start to pause game play, then quickly press Square, Circle, R1, R2, then hold R1 and press R2. Sarge will have access to all the weapons and unlimited ammunition during the current level.

Alternately, press Start to pause game play, then quickly press Square, Circle, R1, L1, then hold R1 and press R2.

Level select:
Press Start to pause game play, then quickly press Square, Circle, R1, L1, then hold R1 and press R2. To unlock all war zones, hold Triangle + Square + Circle and press L1 + L2 at the difficulty option screen.

Run faster in multi-player mode:
Hold Square + Triangle to chase your opponent quicker.

First person view:
Hold Start + Circle + Square during game play. The game will pause. Press Start to resume the game in the first person view.