Freeze: Press Up, Down, Up.
Jump: Press L1 + R1.
Land mine: Press Right, Left, Down.
Charge Mine: Press Right, Left, then hold Down.
Invisibility: Press Left(2), Down(2).
Shield: Press Right(2), Down(2).
Rear-fire: Press Left, Right, Down.
Hint: Ship level: Electrocute men:
On the Ship level, you can run over a box marked "Danger High Voltage" and watch the three men who are sitting in chairs get electrocuted. They are near the front of the ship on a platform. The box is right in front of them.
Information in this section was contributed by Mazzone.