I vote we let Bruggin buff up, activate a Feat of Strength, and then crush the bastard with a Huge sized maul. If memory serves, Massive Damage still kills the berserker outright, and frankly, it's a Huge sized maul, powered by a feat of strength; if it didn't bury the ugly motherson ten feet in the ground outright or splatter him, then things would be strange indeed.