These creeps will float out of a grave if you step on it,so take care when tredding near cemetarys.Reivers use a fireball attack and can drain your health up close,which gives them more health and makes them even harder to kill than they already are.Their ability to fly make them hard foes for the fighter to face,since most of his attacks are melee attacks.The best advice is to jump up on a mound of dirt ( Make sure it is not a grave or you will have more trouble than you need) and use your hammer to slay them from a range.Hey,look their corpses float!