Hollow Knight - the Hall of Gods / Beating Ascended Nightmare King Grimm

Managed to finally beat ascended version of Nightmare King Grimm in the Hall of Gods. Now I've managed to beat all pre Pantheon 5 HoG bosses in ascended mode - a personal victory! I doubt I will ever have time or skill for that matter for P5 and its bosses though. Charm loadout used: Quick Slash, Unbreakable Strength, Carefree Melody, Unbreakable Heart.