Power-up weapon
Push Start during game to display the Options menu.
Hold L1 + L2 until the red box stops moving.
Continue to hold the buttons and press: Right, Down, Right, Triangle. (The "Power" option confirms correct entry.)
Select "Power" option from the Pause menu to set firepower to maximum.

Refill ammunition
- Push Start during game to display the Options menu.
- Hold L1 + L2 until the red box stops moving.
- Continue to hold the buttons and press: Down, Right, Circle, Left, Right, Circle. (The "Ammo" option confirms correct entry.)
- Select "Ammo" option from the Pause menu to select a round limit of up to 32,000 rounds. (Note: You may experience display problems if you exceed 15,000 rounds.)

Alternately, push Start during game and hold Down + L1 + L2 for approximately 20 seconds. Then press: Up, Right, Circle, Left, Right, Circle.

Restore health
- Push Start during game to display the Options menu.
- Hold L1 + L2 until the red cursor stops moving.
- Continue to hold the buttons and press: Right (x2), Left, Down (x2), Up, Triangle, Circle. (The "Health" option confirms correct entry.)
- Select "Health" option from the Pause menu to restore your health bar.

Alternately, push Start during game and hold Down + L1 + L2 for approximately 20 seconds. Then press: Right (x2), Left, Down (x2), Up, Triangle, Square.

Extra lives
- Push Start during game to display the Options menu.
- Hold L1 + L2 until the red cursor stops moving.
- Continue to hold the buttons and press: Left, Down, Right, Triangle, Square, X, Circle. (The "Lives" option confirms correct entry.)
- Select "Lives" option from the Pause menu for additional men.

Additional smart bombs
- Push Start during game to display the Options menu.
- Hold L1 + L2 until the red cursor stops moving.
- Continue to hold the buttons and press: R1, R2, X, Triangle, Square, Circle, R1, R2, Circle (x2), Square. (The "Smart" option confirms correct entry.)
- Select "Smart" option from the Pause menu for additional smart bombs.

Skip level
- Push Start during game to display the Options menu.
- Hold L1 + L2 until the red cursor stops moving.
- Continue to hold the buttons and press: X, R1, Triangle, R1, Square, Circle, R2 (x2), X, Square, Triangle, X. (The "Skip Level" option confirms correct entry.)
- Select "Skip Level" option from the Pause menu to skip levels.

Play as bloody body
Put the healing code in first. When you die, pause the game and go to healing. Click on it, and you will play as a bloody body. You can't get a key or shoot though.