Self-destruct
Pause the game and press [Up]x2,[Down]x2,[Left], [Right], [Left], [Right], [B], [C]. Your ship will explode when game play is resumed. This may be beneficial when fighting Bosses. After your ship explodes, it will split into four bells. Taking a green bell will enlarge your ship and allow fifteen seconds of invincibility. While invincible, any target that comes in contact with your ship will be damaged or destroyed. If a green bell does not initially appear, shoot one of the other bells until it turns green.