Abyssal Ooze

Abyssal Ooze infest the Abyssal Shaft and although any adventurers strong enough to
brave the dungeon will be strong enough to
defeat them, the corrosive ooze will degrade
their weapons and armor, making prolonged engagements unfeasible. Abyssal Ooze are
also noteworthy for their high durability.
•Log Horizon