Helmets are loot in Deterministic Dungeon. They lower damage inflicted by opponents in battle.
Bare Head: "Brrrrrrr... is there a breeze in this dungeon?"
Tin Foil: "Protect your brain from rays of alien invaders!"
Black Kettle: "Double, double, toil and trouble. Enemy atacks go clanck!"
Kettle Helmet: "Mmmm, anybody hungry for some popcorn? This helmet will get you back home safely."
Mail Hood: "Light and flexible and very protective."