Cheat Codes
Here's a selection of codes that will drive you into a frenzy. To use them, pause the game and enter the desired code.
Effect - Code
Red Key - Down, Down, B, C, Up, Up
Yellow Key - Up, Up, B, C, Down, Down
Full Oxygen - C, C, B, A, Down, Down
Full Ammo - B, B, B, Right, Down, Left
Level Skip - Up, A, Up, A, A, Down
Cannon - Left, B, C, Down, Down, Right
Grenade - Up, Down, Up, Right, B, C
Lock On - A, A, Left, Right, Left, Right
Piercer - Up, Right, Down, Left, Up, Right
Rapid - C, Up, Up, Right, Right, A
Ricochet - Left, Right, C, A, B, Right
Spray - Up, B, Up, A, B, B
Tribolt - A, A, A, Right, A, Right