Location: Petrin Hill Monastery 3

Strengths: Mercurio can make short work of either Christof or Wilhelm with his Plague Wind. He also possesses the power to summon the undead, which he will use at the beginning of combat.

Weaknesses: Mercurio's main weakness is his lack of armor. Get in melee range and hit him with everything you have, being careful to avoid his Plague Wind.