Cleared that room in the end. dragged the Hellcats back up the stairs to the narrow balcony where the spiders are and stabbed them until they died. The I used the Gorecyclops to help me kill the minotaurs (at the expense of a pawn).|
After that I killed the GoreCylcops and the Harpie from the balcony abobe. Time consuming but a challenge well done.
My own slice of the internet is here: http://www.maulsquad.com - it isn't very good.