When the Trolls fall down, use either Fire or Acid-based attacks to finish them off. IIRC, Poison-based attacks can finish them off as well. One other feature is that when Trolls are stunned/held, they can be immediately killed without the need for a finishing move.
ADD] Oh, and welcome to the Ironworks Forums.
[ 08-21-2002, 07:49 AM: Message edited by: Dundee Slaytern ]