Alternate Geese Ending
Beat game with Geese using alternate costume
Alternete Billy Ending
Beat game with Billy using Alaternate costume
Extra Geese outfit
At the character screen, Highlight Geese and then hold Start and press Circle or X for a black suit and then hold hold start and press Square or Traingle for a dark brown suit.
Extra Options
Unlock Duck King to enable team battle and data modes
Play as Duck King
Complete the game with every character
Play as Mr, Karate
Beat the game without continuing or losing any rounds.