Enchanted Hammers act as hammer warriors for the Forgotten. Any anti-warrior skills are useful against them. Hammers do have high armor, so can take a while to kill. It is usually unnecessary to remove Defensive Stance via Wild Blow or such, because the Enchanted Hammers will often cancel the stance quickly by using a skill. As they are enchanted pieces of armor they have no flesh and are immune to bleeding, poison and disease but have a weakness to lightning damage.