>>712467702
>It matters because doing it takes fucking forever, remember the abyss has 999 levels? Imagine clearing 4 sub-missions each time
You don't do 4 sub-missions each time. When you enter the abyss you have four to clear, but every new floor after that only adds one ailment, so it becomes once per floor.

>>712467764
>best stage in Nioh 2
It's from Nioh 1. It's the Umibozu stage.