Old Nail
The Old Nail is the starting weapon and deals 5 damage.
8 source-linked references · 4 with game artwork
8 matching references · Undated entries keep reference order.
The Old Nail is the starting weapon and deals 5 damage.
The Sharpened Nail deals 9 damage and costs 250 Geo.
The Channelled Nail deals 13 damage and costs 800 Geo plus 1 Pale Ore.
The Coiled Nail deals 17 damage and costs 2,000 Geo plus 2 Pale Ore.

The Pure Nail deals 21 damage and costs 4,000 Geo plus 3 Pale Ore.

Vengeful Spirit upgrades to Shade Soul; its listed use is horizontal ranged damage.

Desolate Dive upgrades to Descending Dark; its listed use is a down-slam that breaks floors.

Howling Wraiths upgrades to Abyss Shriek; its listed use is upward and area damage.
Decisions are limited to the four supplied tables. The progression guide and IGN spell page identify Hollow Knight, but the excerpts do not specify a game edition, DLC variant, or NG+ distinction; none is inferred.
Counts describe the imported source tables. They do not establish complete coverage of every patch, DLC or upgrade variant. Multiple values remain labeled as listed values when the source does not identify their upgrade levels.