Weapons in Pillars of Eternity 2: Deadfire is covered on this page. Weapons include swords, wands, axes, firearms etc. You can get the weapons through quest reward, enemy loots or purchase from NPCs. Every several levels (except for Devoted Subclass) you have to choose a Weapon Proficiency for your character. Each Weapon Proficiency gives access to the corresponding modal Weapon Ability as well as other bonuses for some classes.
Unique Weapons Categories
Unique Weapons List