I was unable to kill him either, if you have the ring of golem charming, then charm him before he turns red (caused by taking items). Use him with your party to kill the others, then empty the three containers (statues I think, but I can't remember) and then move all your guys into the hall. He's too big to follow. After you finish the de'Arnise Keep Quest he won't be there when you go back.
There are some other hints about this from other in the history of the chat board, but I found it easier just to do it my way.
|