The summon fight requires a bit of luck but after a few tries and focusing in the 2nd part on hell dog first will eventually win the fight.
But then the fun starts. I managed to beat Shurado with a poison team and it still took me 7 rounds. Don't even know why they give you Sage Naruto as support since he can't do anything on the purple ninja's except die.
Gakido i have no idea. I tried every combination of poison and ignite but after 3 turns they are basicly immune to all dmg.
Seriously, immunity to ninjitsu,tajitsu and elemental damage from start. Who comes up with these bizare things?
I came here looking for a way to beat it.
Using almost always W I was able to beat the summons easily and the rest of the Instance.
Team: Pain - Shurado, Pain - Tendo, Mei Terumi, Crimson Fist Earth Main