Nine continues

Pause the game and press Down(3), X, Circle, X, Circle, Triangle, Square, Triangle, Square, Up(3), Left, Right, Left, Right, Left, Right.

Nine planes

Pause the game and press Up, Down, Left, Right, Square(2), Left, Right, Square, Circle, Up, Down.

Self-destruct

Pause the game and press Up(2), Down(2), Left, Right, Left, Right, X, Circle.