I found a strat that requires a lot of patience. Used it to clear Difficulty 70.
1.use Shoho and the Kitsune and keep all the meat from the initial wave. Since, new enemies will not spawn till it is eaten.
2. Put the meat close enough to the kitsune so that Shoho can target it
and the kitsune don't devour it, since buffs stack infinitely you can wait a couple of minutes so that the kitsune can one shot anything.
Animations do start getting a bit funny with all the attack speed up