Which items work well / don't work for Boss battle's?

[WhYdOyOuThInKtHaThApPeNeD]

How is it 17 Trolls do around 3000 physical damage to the Driller while 14 Cyclops with the same attack rating, also doing physical type only do around 50-90 damage? It says the base attack is the range attack for the cyclops. Must be something I don't know about the Cyclops. I've never seen such a dramatic damage difference when using the Cyclops.

It's not just the range aspect since Evil Beholders & Arch-Mage do A Lot of damage to the Driller (granted magical type). And it's not just the physical type since the Troll does A Lot of damage. What's special about the Cyclops range attack? I have noticed the Cyclops generally does do more damage when using his regular attack melee as opposed to range, but not that dramatic a difference.

...

Ok it's gotta be the Driller. After the Cyclops consistently doing super low damage for several rounds now it's consistently doing 1500-2000 damage. But now the Demons which usually do around 1500 damage are consistently doing around 50 damage. If this is some special thing about the Driller it might be good to add to the info thread about him. Otherwise maybe it's some game mechanic I don't know about?