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Playstation 2 - Naruto - Uzumaki Chronicles cheats

Unlock completion rewards:
Finish the entire game once to access to Gaara and Kakashi as support 
characters, the Boss battle and the shuriken pattern.

Restore Chakara/Stamina:
While the game loading and you see the loading screen with the Konoha 
symbol in the bottom right corner, rotate the Right thumb-stick and/or 
Left thumb-stick. A Blue Chakara Ball will appear and chakara/stamina 
will increase by 25%.