Ascended Nightmare King Grimm | Hollow Knight
Yeah this took a while ( 12 attempts , I have skill issue )
There's a lot of ways I died such as sticking to the edge almost every single time, and getting killed or knocked off by the damn dash uppercut.
My advice is to stay in the middle as much as you can, so you have room incase he throws an attack at you that you can't dodge or avoid.
Charms used:
Quick Slash
Mark of Pride
Dream Wielder
Sprintmaster