And yes, the last story mode battle is frustrating as FUCK
The whole rest of the game is easy, but the last fight is HJFDSHFJSDFH it's not even fun.
You're Ninetail Naruto; and it's Deidara with super armor, super damage and he's in Crisis mode, so he's making like 4 clay spiders at once.
When he explodes a bunch of them on command, you'll lose like 3/4 of your life. But if you fought Kabuto at the end of Revo 2 you'll come up with a good strategy.
But don't let that stop you from buying the game, man