Necropolis – “Forward and Inward” [Campaign 2, Mission 2]

It's better to avoid tears and not fight Anton.

You'll have to fight your own brothers anyway, as far as I understand. As well as the clone of Nastya. And going down the path of tears as a Necromancer is not a very enjoyable experience. A 20% bonus to damage from Chaos magic spells and instant vampirism with Necromancer tactics is much better.

I didn't know about the Liches and Spiders, thanks. I completed the quests to save Uriel, build the wall, and collect crystals, gained experience and got some mediocre artifacts, thought "I don't need this kind of happiness, running around the map for dubious profit," and gave up on the remaining two quests.