During the game, shoot a laser. While the laser is visible, pause the game and press R, R, B, A, B, R, A, C, A, Stop. Then pause it again and press A, C, A, R, A, A, B, A, A, A, Stop.
Invincibility
Shoot a laser. While the laser is visible, pause the game and press A, A, A, C, R, Stop.