At the Command Center menu select ''Access Codes''. Now enter 0601. The screen should say ''Error''. Press Start to return to the Command Center and begin your game. While you're standing still, press and hold Select + Up to float in the air. Press Left or Right to move in the air.
After entering the Levitation code, press Select + A at the same time. A lightning symbol will appear next to your lives. You now have 3 HUGE shots that will knock you back when fired!