Entering Cheat Mode

Normal cheat mode
     Pause  the  game and press Circle, X, Square, Select. This allows
one  of  the  following codes to be used a limited number of times per
mission.  Note:  This  code  must be entered again if a new mission is
started.

Extended cheat mode
     Fire  the  laser  and  pause  the  game  while the laser is still
visible.  Press Square, X, Square, Circle, Triangle, Circle, Triangle,
Select. This allows one of the following codes to be used an unlimited
number of times.

Invincibilty:
     Enter cheat mode, pause the game and press Square, X, Triangle.

Smart bomb:
     Enter cheat mode, pause the game and press Square, X, Circle.

Super laser:
     Enter  cheat mode, pause the game and press Circle(2), X, Circle,
Triangle, Square.

Mission completed:
     Enter  cheat mode, pause the game and press Square, X, Square(2),
Circle.

Refuel:
     Enter cheat mode, pause the game and press Circle, X, Square.

Rolls
     Hold L1 or L2 and press Left or Right to roll.