The Nail is the Knight's primary weapon, a sharp blade used for melee attacks. Its damage can be upgraded five times by the Nailsmith in the City of Tears. Each upgrade requires Geo and a piece of Pale Ore. Fully upgrading your Nail is crucial for dealing sufficient damage to later bosses. Mastering Nail bounces (hitting enemies or certain objects from above to gain a small jump) is also a vital movement and combat technique.
