Charms are powerful items in Hollow Knight that gives the player special bonuses and enhancements. Some Charms make certain spells and abilities more potent, some spawn companions to aid the Knight, and some simply give them offensive or defensive buffs. Due to the game's difficult nature, the importance of Charms goes without saying.
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Equipping Charms take up Notches, with some requiring as many as three to four slots. If the player wants to equip as many Charms as they can, they'll need to collect every Charm Notch in the game. They will start with just three Notches, and collect eight more in the campaign for a total of 11. Here are all the Charm Notches that can be collected in Hollow Knight.
To start off, the player can simply buy Charm Notches from Charm Lover Salubra, who also sells Charms. She has a shop located at the far end of the Forgotten Crossroads. To buy Charm Notches from her, the player needs to own a certain number of Charms. The shop is also only available once the Knight downs Gruz Mother and unlocks either Mothwing Cloak or Mantis Claw.
Here are the Charm Notches that can be bought from Salubra as well as their price and condition:
- 1st – 120 Geo. Needs 5 Charms.
- 2nd – 500 Geo. Needs 10 Charms.
- 3rd – 900 Geo. Needs 18 Charms.
- 4th – 1,400 Geo. Needs 25 Charms.
Another Charm Notch can be picked up in the Fog Canyon. It is located in the room just underneath the Stone Sanctuary. The player will need Isma's Tear to get to this location since they will need to swim in a pool of acid just to get to the room's small opening.
Players will also need to fight explosive Oomas along the way. The Charm Notch is located at the end of a maze-like area filled with explosives, which can be triggered by hitting them with Shade Soul.
The Charm Notch in the Fungal Waste is very easy to find, but it is safeguarded by two Shrumal Ogres. It is in the room at the lower right of the area's top-most bench.
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When the player gets inside this room, they must simply defeat the enemies guarding it and they should be able to claim the Charm Notch with ease. The enemies aren't very difficult, but like everything else in the game, the player should still remain careful.
Grimm is the leader of the Grimm Troupe. This quest is part of the Grimm Troupe DLC. Before the player can even get the chance to fight Grimm, they must first activate this DLC by going back to the Howling Cliffs and manually triggering the quest. This is done by Dream Nailing the corpse of a bug hidden behind a breakable wall. This lights the Nightmare Lantern, which starts the quest. This corridor is located left of Joni's Repose.
Once the quest is triggered, the Grimm Troupe will arrive at Dirtmouth. The player can then fight Grimm inside the tent. Defeating him will reward the player one Charm Notch.
Another Charm Notch can be earned by completing the Trial of the Warrior. This trial is the first and the easiest in the Colosseum of Fools.
The Colosseum is located at the top of Kingdom's Edge. For 100 Geo, the player will be able to compete in the first trial.