Press Triangle, Square(2), Circle(3), Triangle(2), Square(3), Circle(4), Square, Triangle, Circle(3), Square,Circle, Triangle,Circle(2), Square, Circle(2), Triangle, Circle, Square, Circle(3), Triangle at the title screen, the load or start a new game. Note: The invincibility does not occur on all levels. Pause game play to access the cheat option at the level selection menu.