Unlock All Characters in Versus Mode

At the Start screen press UP, DOWN, DOWN, RIGHT, RIGHT, RIGHT, LEFT, LEFT, LEFT, LEFT, then hold CIRCLE and press start. Proceed to the versus mode where every character will be available.

Unlock Max Power Mode

At the Start screen press L1, R2, L2, R2, L2, then hold L1 and press Start. You will now have unlimited ammunition and every weapon.

Unlock Sudden Death Mode

At the Start screen press L1, R2, L2, R2, L2, TRIANGLE, CIRCLE, TRIANGLE, CIRCLE, then hold L1 and press start. Sudden Death Mode will now be available from the Main Menu.

Unlock Trial Mode

At the Start screen press UP, DOWN, DOWN, RIGHT, RIGHT, RIGHT, LEFT, LEFT, LEFT, LEFT, then hold TRIANGLE and press start. This allows you to practice in every level.

04/07/03

The following codes must be used at the PRESS START screen before the demo of the game starts rolling. You should hear a sound. 

All Stages (Trial Mode)

Up, Down, Down, Right, Right, Right, Left, Left, Left, Left then hold Triangle and press Start.

One Shot Kills (Sudden Death Mode)

L2, R2, L2, R2, Circle, Triangle, Circle, Triangle, then hold L1 and press Start.

Max Ammo And All Guns (Max Power Mode)

L1, R2, L2, R2, L2, Triangle, Circle, Triangle, Circle, then hold L1 and press Start.

All Characters In Multi-Player Mode

Up, Down, Down, Right, Right, Left, Left, Left, Left then hold Circle and press Start.

04/10/01