From Brotato Wiki
Stats
A random weapon is upgraded when entering a shop. If you have no weapon to upgrade, you gain +2 Armor instead.
Price
120
Limit
1
Unlocked by
Win a run with Arms Dealer
Item
Anvil is an in-game item that can be bought from a Shop or can be found in a Crate. Most Items modify the Stats of the player, and some of them provide additional effects.
Unique
Anvil is a unique item. Only 1 of each unique item can be equipped, and it will then no longer be offered in the Shop, and no longer drop from loot crates.