"Ashes' Will" - "The Last Soul" [2nd campaign, 1st mission]

The mission turned out to be easier than I thought. When I approached the city where the demons were, I was a bit nervous at first, but I attacked and won, and even half of my troops survived. I also leveled up my Knight using a similar method, and I focused on Chaos, Spellpower, and Logistics. However, I leveled up my Necromancer differently; I think I gave up on Chaos and took something else instead, but I don't remember what it was anymore.