Start your game, doesn't matter how many players. When you have the option of selecting your character or entering a password, at least one of the players should choose password. Enter "HOMINGAAA" and press Button 1. It will say "Password Error", but don't worry, just press Button 2 to go back and this time choose your character. Now, whenever you attack, hold the button and press the directional pad to make your weapon go anywhere on the screen.