Tomcat's advice above is pretty much exactly how it panned out for me too. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
The great advantage of the hammer spell is its capacity to stun, so if you have a few mana potions to keep refreshing the spell, you can keep any enemy pinned down while you plink away with swords, arrows, or whatever else you've been using.
I had an axeman/mage up front and an archer (DK) in support, so old Sammy was taken down without much trouble. It still took a while, but it wasn't all that stressful. <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />
