Shockwave Assault Cheats (PlayStation)

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.

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