Type these codes into the "CHEAT" box located on the character select screen:

MOREAMMO = infinite ammo (note: need to shoot assistant in bonus rounds in order to play)

NOHIT = invincibility

POINTER = add laser pointer to the gun

FASTFIRE = click and shoot faster

LEVEL1 = Level 1

LEVEL2 = Level 2

LEVEL3 = Level 3

LEVEL4 = Level 4

LEVEL5 = Level 5

LEVEL6 = Level 6

LEVEL7 = Level 7

LEVEL8 = Level 8

LEVEL9 = Level 9

BONUS1 = Bonus 1

BONUS2 = Bonus 2

BONUS3 = Bonus 3

BONUS4 = Bonus 4