You need to power up :)

I made it through second try with GNW Kiba, Tenten, fire main, and... I think Hinata, too, just by relying on combos, especially 10 hit combos.

Oh cmooon, there should be other than just power up :/ i mean i'm an f2p player on a server that just started. No GNW kiba, no ingots to power up that quickly. I just need to clear that exam for the server opening reward :(

Any other ideas? Im also stuck

I've got the exact same lineup with about 12.3k power but my team still gets wiped out.

For Earth Main use Revive skill Hidan and Tobi

As water main at 15 k power i managed to pass lvl 70 with kimimaro,tayuya and sai/kabuto would work
https://gyazo.com/4d844ed4383f73b08f08452fbb523e41

and as skills for main
https://gyazo.com/570db8bd10f71bf904135fc4220daa8a
it worked for me without any manual skills
hope it helps and instead of tayuya you could use shino to interupt jiraya or other that will interupt