After the game starts, while the "Sachen" logo animation is in progress, press and hold A + B + Select + Start on Controller 1. Continue holding these buttons until the logo is standing still. Release all the buttons except Select, and while holding Select press A, B, Start, A, B, Start, Up, Left, Down, Right, Start, Start, Start, Start, Start, Start, Start, Start, Start, Start, and finally press any other button.