Fortress versus Necropolis.

Guys, help!!! Please advise on how to defeat Necromancers in the late game, especially those annoying little, fat creatures who shamelessly use rune magic and other overpowered abilities. I'm asking for advice from people who really know the game and can offer tactical suggestions, because I'm playing against a strong player who, firstly, levels up his Dwarves correctly, and secondly, moves so cleverly that he wipes out hordes of my Necromancers in just a few turns. I'm even thinking of writing a letter to Nival and cursing them for their inhumane treatment of other races. They've made the Dwarves TOO strong in the late game, and it's starting to feel like blatant cheating:mad: :mad: :mad: