Shien's Revenge
   Control bossesSuper Hard Mode30 ContinuesStart with special weaponsSuper easy
Control bossesWhen you start a new game, hold L + R on Controller 2. Now, when you fight the bosses, Player 2 can control them.
Super Hard ModeAt the title screen, press R 7 times on Controller 2 for a Super Hard Mode. 
30 ContinuesAt the Title Screen, press Select seven times on Controller 2, to have30 Continues.
Start with special weaponsAt the Title Screen, press Start nine times on Controller 2, and youwill start with special weapons.
Super easyAt the Title Screen, press the L button seven times on Controller 2,and the game will be super easy.