Enter the codes at the mission select screen.
| Invincibility | R, Z, C-Down, R, C-Down |
| Unlimited ammunition | C-Up, Z, C-Left, Z, L |
| 7.65 silencer gun | C-Up, L, C-Right, C-Left, C-Up |
| 9mm high-power gun | R, L, C-Down, C-Up, C-Up |
| Uzi | C-Right, C-Left, C-Right, C-Down, R |
| Mini-rocket launcher | R, L, C-Left, C-Right, C-Down |
| Turbo mode | C-Up, Z, C-Up, Z, C-Up |
| Easy mode | C-Up, Z |
| Kid mode | C-Down, C-Up, R, L, Z |
| Big feet mode | C-Down, R, Z, C-Right, C-Left |
| Big head mode | C-Down, R, C-Up, L, C-Left |
| Giant head mode | C-Down, L, C-Up, C-Right, L |
