Level select While you are at the main menu, hold Select and quickly press Triangle(3). Then, press Square, X, Square, Triangle, X, Triangle, Circle, Square. Begin a new game, then hold Select and press Left or Right at the mission introduction screen to choose a new starting level. Invincibility While you are at the main menu, hold Select and quickly press Triangle(3). Then, press Triangle, Circle(2), Triangle, Circle, Square, X(2). Super gun While you are at the main menu, hold Select and quickly press Triangle(3). Then, press X, Circle, Triangle, X(2), Circle, X, Square. Invisibility While you are at the main menu, hold Select and quickly press Triangle(3). Then, press Square, Triangle, X, Square, Triangle, Circle, X, Triangle. Overhead view While you are at the main menu, hold Select and quickly press Triangle(3). Then, press Triangle(2), X(2), Square, Circle, Square, X.