Hyper Cleaver

The Hyper Cleaver is an Dungeon sword that is an improved version of a Cleaver or a Super Cleaver, so much that it can do more damage than any non-dungeon Sword that currently exists in Dungeons. It requires Dungeon Level 16 to use and the wielder must complete Floor 3 of Catacombs to use it. This is a good weapon for the Floor IV boss fight as a berserker, since hundreds of animals spawn around the arena, and this paired with the Cleave enchantment is very good.

Trivia
There is also an item ability - Cleave from the game League of Legends which have the same name and similar effect from this item