- ALL MISSIONS:
AT CO-OP OR SINGLE PLAYER MISSION SELECT, PRESS UP, L, DOWN, R, LEFT, L, RIGHT, R, UP.
- INVINCIBLE:
PAUSE GAME, PRESS UP, DOWN, LEFT, RIGHT, LEFT, RIGHT, WHITE, BLACK.
- INFINITE AMMO:
PAUSE GAME, PRESS LEFT, RIGHT, UP, DOWN, UP, DOWN, BLACK, WHITE.
