Which faction poses the greatest challenge for the Dwarves?

Dude, I just tried boosting luck (with Soldier, Bad Luck, and Resistance skills) and replaced the archers with warriors. The dwarves don't stand a chance! The poor warriors were taken down by skeletons with the very first hit. Even though the dwarves have 2 castles and the Necropolis only has one. JackFromShadowLand is awesome!