X PCGame Cheats: Unlock Costumes Enter any of the following cheat codes under EXTRAS to unlock costumes. Code - Result: .2839 - Daphne / Karate Black Belt .4826 - Fred / Knight .1585 - Scooby-Doo / Egyptian .3726 - Shaggy / Native American .6588 - Velma / Pirate December 14, 2011 - 12:35pm