Sentinel on Shrine Island is far too difficult

[Taikocuya]

The second boss in the game. The sentinel on shrine island. I feel like he is far to difficult. He is beatable yes, but only if you grind out. I was level 8 when I beat him and I almost lost that attempt. The Grouders do way too much damage/confusion is too punishing with 2 characters. I would either reduce the number of Grouders, reduce the Grouder's stats, or change the enemies for that boss encounter. - RikaPSO