levels is a mod that adds a level system applied to weapons and armor. These levels increase based on accumulated weapon experience, which increases when you hit enemies, and accumulated armor experience, which increases when you take hits from enemies.

Experience is used to level up the weapon or armor. As we progress, we unlock new abilities for the item in question. For example, for weapons, we have poison potion, freezing, fire, point force increase, lifesteal, and some one-shot kill effects. While for armor we have effects of freezing the enemy, poisoning, gaining strength from the attacker and recovering life, among others.