Anarchy in the Nippon

					
Hidden Characters
Set the game level to Normal or Higher then use each character to beat the game.
Play as the Boss
Set the game level to Difficult Number of Round to 2 or higher then beat the 1P game.
Big Head Mode
Get the hidden characters and the last boss then use each one of these to beat the game once. A new option will show up to allow you to play the Big Head mode.