Congratulations! Looks as though you fought him pretty fairly too.
"so he fled further up the stairs under the effects of the Fear" [img]graemlins/laughsaywhat.gif[/img]
I've only done the fight once myself, and relied a lot on certain high level Illusion spells, the Quick Item slots, and casting off scrolls to ensure no spell casting interruption.
I guess you're going to take on that Red Badge Poison brigade next!
Again;