I just beat it today, thinking that I couldn't do it x'D

My main character, Breeze Dancer, is level 38 with a power of 4360. Some people said to use a character with poison but I didn't do that. I used Naruto (2 Stars), Sasuke (2 Stars), Hinata (2 Stars) and my main (1 Star). 2 of your characters may die, like what I experienced, but I'm sure you will pass it sooner or later (:

If you're wondering what the talents I used for my main character, I used Giant Rasengan, Shadow Clone Jutsu, Wind Style - Vacuum Blast Barrage and Flower Guard. I was most focused on getting clones! Hope this helps ^^