Pick up the Ancient Mace off the floor and use it's special attack after he has activated his prayers. If you do it before it wont work and you will have to wait 5 minutes for your spec bar to refill. Like I said, I cannot use special attacks.. You should be able to if you pick the item off the floor, it just applies to items that you've taken in. Or so I have been told anyway. It does not work, lol. Tried using Veracs, no effect. Going to use poison and vengeance now. Thanks anyway. EDIT: That did not work either. Any other tips? I'm facing exactly the same problem - I think the key is not to have your special attack disabled, use one of your bumps. I've been waiting for nearly 10 minutes for Sigmund to kill me & i've taken my armour off!!