If you watch the series you will find yourself bored untill you have unlocked everything for multiplayer
Playing around the village is very boring and you have to do it in order to progress further down the line. Stupid little things like finding ingredients for ramen and collecting jutsu scrolls its all a really annoying waste of time.
The only real upside to the negatives of the game are that playing multiplayer is really fun. There really arnt a whole lot of playable characters. It would have been nice to see a lot more but the ones that are there are enjoyable to use.
Its not really a hard game to finish i finished it in about 19 hours. From the looks of things the naruto games are just the first story line and not shippunden ..if thats right havnt investigated that to much.
Id advise you to only buy it if its really so appealing to your other wise you might regret buying it, Its just one of those games u can finish in a few days and get bored of reasonbly fast.