Demon attack.

I started playing as the Tower faction, with the main hero being Ilaya and the auxiliary hero being Railag. So far, there have been 3 demons and one hero of each color; the orange one somehow self-destructed. I haven't taken any towns yet, only the nearby mines. A couple of bandits appeared on the roads and were defeated by auto-combat. I'll share more about the process later, as I haven't seen any examples of playing as the Tower faction here. (Version 3.0, on Recruit difficulty). I chose this set of skills/abilities because I want to develop her towards a super ability. I hope there's a mentor on the map, just in case. And as additional help, I've collected a full set of dragon artifacts, so Ilaya gets +1 black dragon in her army each day. 7 pieces have been found, and I bought the missing necklace in the castle shop.