Dungeons/Rare

Dead Book
Description
+0.5% Dmg and Crit chance for each monster type you defeat, even before getting this.
Increase per level
+0.05% Dmg, Crit chance, Move Spd.
Unlock Requirement
Unlocked from the start

Armadillo
Description
+1 base damage for every 10 Max HP you have. Also gives 2 Helping Hearts, because he loves u!
Increase per level
+0.1 Base DMG per 10 Max HP.
Unlock Requirement
Unlocked from the start

Spiky Spine
Description
Whenever you get hit, deal 120% damage to that monster. If you block, deal a critical hit.
Increase per level
+5% retaliation dmg
Unlock Requirement
Unlock this item by completing 'Blunder Skull' from Frostbite Tundra

Single Cut
Description
Take 10 dmg, and gain +6% dmg. Also, 90% chance this item will drop on the floor again.
Increase per level
+0.2% damage.
Unlock Requirement
Unlock this item by completing 'Vial Noob' from Yum Yum Desert

RNG Voucher
Description
Selling any enhancer has a 10% chance to drop an RNG item of 1 choice.
Increase per level
+1% chance
Unlock Requirement
Unlock this item by completing 'Souped Up Salts' from Frostbite Tundra