Super Darius

Difficulty select:
Hold Select and press Run at the title screen. Select a difficulty level, then press Run to begin game play.

Boss fight:
With a TurboTap, hold Up + Run + I on controller two while holding Down + Select on controller one at the title screen. With those buttons held, press Run on controller one . Note: The Turbo switches must be down on both controllers. This code may only be enabled when the title screen appears for the first time after the game loads.