Only found in the Lebros Cavern Assault mission, "Excavation Duty". For strategies on how to complete this mission and more, visit Assault Missions. Strong to: All magic and melee; 0-18 from normal melee and magic attacks, up to 100 from Weapon Skills; having a bomb Self-Destruct by them doesn't do anything.File:Exclamation.gif Weak to: Qiqirn Mines. To use a mine, have the person engage the Brittle Rock, use the Qiqirn Mine on it, and stay engaged while it blows it up. This will take out the wall in one shot. DoT spells such as Bio and Shock also result in a significant amount of damage. Poison and Requiem, however, are fully resisted.