Nailsmith

Found in the City of Tears at the far left of the map from the bottom. When The Knight enters his smithy, the Nailsmith at first mistakes them for somebody else. He will provide the first Nail refinement for a small amount of Geo, after which he will require both Pale Ore and Geo to upgrade further.

After forging the Pure Nail, the Nailsmith will step outside and ask to be cut down. Obliging him sends him plummeting down into the waters below, awarding the 'Purity' achievement. His body can be found in the Junk Pit. If the player leaves without attacking, he can be found later at Nailmaster Sheo's, unlocking the 'Happy Couple' achievement. The Nailsmith mentions here that he was around during the time of The Five Great Knights.

Trivia

 * The Nailsmith's quest to forge the perfect nail was a Kickstarter stretch goals at $44,000 was the addition of four new quests to the game:
 * The Nailsmith was first revealed in a Kickstarter update, although that information is no longer canonical:
 * "Follow a twisting path from the outskirts of the drowning city. Cross a broken bridge and you'll hear it close, the ring of metal and the roar of flame. A craftsman obsessed.
 * Within his forge the Nailsmith is searching, on an endless quest to create a flawless nail.
 * Past failures pile outside his door, exposed to the rains and left to rust. He spares no thought for imperfect things. Nor does he pause to take notice of the countless beings that take their pick of his refuse.
 * But his neglect has impact. His discarded nails have spread wide through Hallownest, clutched tight in the hands of creatures possessed.
 * Only in the Hollow Knight's broken nail does he at last see true potential. Distant and difficult to achieve, but it is in there, waiting - a blade to be honed beyond all others, to be forged into a form so brilliant it transcends its metal and becomes myth."


 * It is possible to kill the Nailsmith with any attack when he asks, including Spells. Whether this is intentional is unknown.
 * The Nailsmith's body can be found in the Junk Pit if the player chooses to kill him. Dream Nailing his body gives the line:
 * "Pure...​"

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