All in all an average game. Even as a Naruto fan I didn't thoroughly enjoy it. Repetitive with weak character design.
Though much of it is made up by Tsunade's VOLUPTUOUS gifts to man.
Overall this is an average adventure game combined with an average fighting game. The adventure aspects are decent with plenty of puzzles to solve with your friends various jutsu's (or powers). The fighting shines a bit more with intricate combos that are satisfying when executed properly, though fighting the computer can be a bit annoying with its innate ability to dodge perfectly.
As for the flaws, there are quite a few. First of all, the parkour tree jumping game is far too boring. And you have to do it over and over again, which Ubisoft doesn't seem to find annoying, so I imagine the designers there also enjoy things like Elderly Home Bingo Night. Also, who is leaving all that money on trees and rocks? Someone with far to much money on their hands by my standards.
Also the puzzle element seems rushed because old switches you use for previous puzzles still react when you turn them on and off, which makes you feel like you're missing something or doing it wrong, which you're not. Blame the Ubi.
Finally, just as a Naruto fan, I have to say, if you're going to tackle a franchise as popular as Naruto, at the very least get the character designs right. You don't need a story team because the anime/manga lay the story out for you, so put some time into the other qualities of the game and make them quality. Many characters' mouths look as if they got the same treatment the Joker did, looking as if they could fit an entire frisbee in their gobs. Also Gaara looks stupid. Why Ubi? Why?