I ran to the far corner of the room each time, never took damage. If you're on fixed, you just so happen to have him off your camera too, and he conveniently runs towards you after he does the shadow attack. Vampyres are supposed to be aligned with Zamorak, correct? Anyone else find it weird that Vanstrom uses 3 of the 4 Zarosian elements (ice, blood, shadow)? Just a thought.