Here's a way to arrow flash your way through an entire level. Go to the
Option screen and change Arrow Flash from "Stock" to "Charge." Exit the
Option screen and let the demo play all the way through once. Now Start
the game, and press C to activate the arrow flash. Hold C Down, and your
arrow flash will last a very long time. Sometimes it will go out at the midpoint
of a level, but just press and hold C to reactivate it. This way, you can
zip through the entire game!
