Final Boss battle:
Hold Down + I and press Run at the "Input your birthday"
Hold Up + I and press Run at the "Input you birthday"
screen to display the sound test menu. Note: The duration
that Run must be pressed is very precise.
Enable the "Sound test" code. Press Select, Up,
Up, Down, Down, Left, Right, Left, Right, II, I at the sound
Enable the "Adjust brightness" code. Press Select
until a flashing red screen appears. Then, press II, Up, Up,
Down, Down, Left, Right, Left, Right, II, I. Use the D-pad
to move, II to shoot, and I to fire a smart bomb during the
Press Select fifteen times in level one during game play.
Press Run to pause game play, then hold I and press Up.
Pause and resume game play one hundred times. All enemies
that are shot will turn into bonus lives.