Just got Naruto:Ultimate Ninja 2, and already beat it. Also if anyone would like to know, the secret characters are Guy Sensei Suit Naruto and Head Hyuuga Clan Hinata. Unlockables are Itachi, Kisame, Third Hokage, Orochimaru, Orochimaru Sealed, ANBU Kakashi, Nine-Tailed Naruto, Tsunade, Jiraiya, Kabuto, Zabuza, Haku, and that would be all.