Invincibility
To achieve momentary invincibility, make sure you have a scroll of substitution and a scroll of hidden cloud in your personal inventory. You can purchase both scrolls at the weapon shop. Once you have the scrolls, fight an opponent in Ultimate Mission mode and waste two of your items. Now pause the game and use both of the aforementioned scrolls. When you resume play, you'll possess temporary invincibility, so attack without fear.
Characters
The game includes 18 hidden characters for you to unlock. For example, completing "Burning Will of Fire" in Flashback Mission: Leaf Destruction Arc unlocks Gaara, a sadistic foil to the cheerful Naruto. Finishing the Genin Training Arc unlocks Kakashi Hatake, Naruto's leader and mentor. Other unlockable characters include Kabuto Yakushi, a spy and medic for the evil Orachimaru; Itachi Uchiha, a prominent member of the Akatsuki crime syndicate; and Kisame Hoshigaki, Uchiha's pale blue-skinned partner. Completing various other missions throughout the game unlocks the other hidden characters.
Costumes
Successfully completing special tasks also unlocks five secret alternative costumes. Completing "Gaara Returns" in Flashback Mission: Sasuke Chase Arc unlocks Gaara's later costume, Kankuro's later costume and Temari's later costume. Finishing "Sasuke and Gaara" in Flashback Mission: Leaf Destruction Arc unlocks Sasuke Uchiha's black costume. To earn Shikamaru Nara's Chunin costume, you must successfully complete "Shikamaru's Squad Is Summoned" in Flashback Mission: Sasuke Chase Arc.
Jutsu Juggle
In the game, characters can execute special attacks known as Jutsu. Mastering a clever Jutsu trick can help you juggle opponents in the air and inflict devastating damage. First, use a combo attack to knock your foe into the air. Press the "Triangle" button, and then press and hold the "Circle" button to charge up a Jutsu. When your opponent falls to the point where your heads are at equal heights, release the "Circle" button to unleash the Jutsu, which will smash your enemy back into the air.