Boss Guide · Hollow Knight
How to Beat Nightmare King Grimm
⚠ Extreme
Weak to:Sharp ShadowQuick SlashPattern memorization
About Nightmare King Grimm
The dream-empowered form of Troupe Master Grimm. One of the hardest bosses in the game with incredibly fast attacks.
Attack Phases
1
Nightmare Dance
Extremely fast teleporting attacks. Every move has a precise dodge window.
- ›Fire bat barrage
- ›Uppercut dash
- ›Flame pillar
- ›Pufferfish explosion
2
Frenzied Nightmare
Same attacks but faster and with fire trail additions. No safe healing windows.
- ›Accelerated fire bats
- ›Double uppercut
- ›Flame trail pillars
- ›Rapid teleport slashes
Rewards
- •Nightmare Lantern completion
- •Grimm Troupe ending
Weaknesses
Sharp ShadowQuick SlashPattern memorization