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Playstation 2 - Naruto: Nultimate Hero cheats

Characters:
Beat story mode as any character: Neji Hyuuga 
Beat story mode as Neji Hyuuga: Hinata Hyuuga 
Beat story mode as Hinata Hyuuga: Haku 
Beat story mode as Haku: Zabuza Momochi 
Beat story mode as Zabuza Momochi: Gaara 
Beat story mode as Garaa: Orochimaru 

Unlock costumes:
Go to the character selection screen.
Hold L1 + R1 while selecting a character.