Couple of things. First off, he's a Nemesis... the "final boss", more or less, of Urugarth. During the fight, he has a few buffs on himself, and debuffs on anybody within a few metres of him. His crebain attack at certain intervals, as well.
Drops:
Free-cutter
Bound Unique
One-handed Sword
45 - 65 Ancient Dwarf-make Damage
27.5 DPS 2.0 Speed
Wield: Your Hit-chance is slightly increased.
+15 Fate
+90 Maximum Morale
+15 Vitality
+18 Maximum Power
Wield: 15% chance of lowering the target's Armour.
Durability: 100/100 Normal
Minimum Level 50
Starkbog
Bound Unique
Medium Armour (Shoulder piece)
87 Armour
+30 Fate
+15 Might
+90 Maximum Morale
+15 Will
Durability 50/50 Tough
Minimum Level 50