- Play as New Sasuke
At the character selection screen, press Up, Down, X(2), Y, X, Y, B to unlock New Sasuke.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

5 Points
Don't Be Shy	Play a match online
King Of The Iron Fist	Be victorious in a fight using a killer combo.
10 Points
Delivery Boy	Finish all delivery missions with Shikamaru.
15 Points
Gifted Eye	Finish all hide and seek missions with Neji.
Fisherman	Be victorious in a gold medal in any fishing game.
Academy Graduate	Reach the Graduate rank online
Genin	Reach the Genin rank online
World's Fastest Ninja	Be victorious in all of the gold medals in the Tree Action Sequences.
Save The Trees	Be victorious in an online match without performing a substitution.
20 Points
Chunin	Reach the Chunin rank online
The Last Chip Is The Best	Finish all gathering missions with Choji.
Top Dog	Finish all races with Kiba.
Untouchable	Be victorious in a fight without losing any health.
My Taijutsu Coach	Learn all of the combos in the Dojo.
Pervy Nation	Make all of the Lovelorn Villagers happy by performing the sexy jutsu.
Way Of The Tree	Be victorious in a gold medal in a Tree Action Sequence.
25 Points
Team Champion	win a tournament in tag fighting.
Naruto's Creed	Finish all of the bounty hunter missions.
Legendary Fisherman	Be victorious in all of the fishing gold medals.
Solo Champion	Be victorious in a tournament in solo mode.
Naruto Raving Ninja	Be victorious in all of the gold medals in the Tanzaku festival games.
30 Points
Jonin	Reach the Jonin rank online.
35 Points
Gold Acquireor	Acquire 50% of the gold coins
40 Points
Card Acquireor	Find all of the ninja cards.
50 Points
Gold Digger	Acquire all of the gold coins.

10 Points
Path of darkness	Visit Sasuke secret room.
Seed of evil	Visit Orochimaru secret lair.
20 Points
Red Sand	Gaara unlocked
Green beast	Rock Lee unlocked
Broken Bones	Kimimaro unlocked
Hell twins	Sakon unlocked
New Hokage	Tsunade unlocked
Lone Shark	Kisame unlocked
Mad Scientist	Kabuto unlocked
Deadly web	Kidomaru unlocked
Brothers	Itachi unlocked
Rock and Roll	Jirobo unlocked
Twisted music	Tayuya unlocked
Special someone	Temari unlocked
25 Points
Guy's Fan	Green Suit unlocked
30 Points
Pervy Sage	Arrive at the Hot Springs Resort with Jiraiya.
The Last Stand	Keep Orochimaru from destroying the Leaf Village.
Tsukuyomi	ANBU Itachi unlocked
35 Points
Broken Bond	New Sasuke unlocked
60 Points
Nine tails	Fox Naruto unlocked

- Bonus arenas
Successfully complete the indicated task to unlock the corresponding arena:

Hokage's Arena	Successfully complete Tag Tournament mode.
Infirmary Roof	Successfully complete Solo or Tag Tournament mode four times.
Temple Courtyard	Successfully complete Solo Tournament mode.
Coliseum Rooftop	Successfully complete Solo or Tag Tournament mode two times.
Endless Planes	Successfully complete Solo or Tag Tournament mode three times.
Madara Uchiha Statue	Successfully complete Solo or Tag Tournament mode five times.
The Valley Of The End	Successfully complete Solo or Tag Tournament six times.

- Bonus characters
Successfully complete the indicated task in Story mode to unlock the corresponding character:

Itachi Uchiha	Overcome Itachi.
Gaara	Overcome Gaara in Rock Lee's flashback.
Rock Lee	Overcome Kimimaro with Rock Lee.
Sakon	Overcome The Sound Four with Sasuke.
Nine-Tailed Naruto	Transform into Fox Naruto.
New Sasuke	Be victorious in the fight against Sasuke.
Temari	Overcome Tayuya.
ANBU Itachi	Successfully complete Sasuke's second labyrinth.
Kabuto	Overcome Kabuto.
Jirobo	Be victorious in the fight against Jirobo.
Green Suit Naruto	Find the flowers mission for Guy.
Kisame	Survive Kisame's attacks.
Kidomaru	Overcome Kidomaru.
Tayuya	Overcome Sakon.
Kimimaro	Overcome Kimimaro with Naruto.
Tsunade	Make Tsunade Hokage.

- Play as Nine Tails Naruto
At the character selection screen, press X(2), Y(2), X, Y, X, Y, X(2) to unlock Nine Tails Naruto.