New era.

This isn't specifically programmed. If the main character is sitting in a church, this is likely typical AI behavior. If possible, try rewinding a few turns and replaying the main character's route.

The demon was the first to deliberately run there. I didn't know then that it was the only passage. Everything, starting from exiting the dungeon, has to be replayed. I'd better break through the garrison.
upd. After gathering troops for a couple of months, I broke through the garrisons, but as it turned out, the boss at the end wasn't just sitting around either; the mission needs to be completed quickly, not by accumulating an army.

upd.upd. This is the most time-consuming map in terms of size/time ratio. Every turn is like playing roulette, wondering where the AI will want to run. Yes, the AI behaves quite randomly in any map, but here you are pursued by TWO heroes EACH turn, for quite a long time. (I got dizzy from the number of portals and even after 10 hours, I couldn't remember which one leads where). In general, it's a frustrating map, but very difficult, and I like difficult things, so it's fine for me. I think it's okay to reduce the difficulty somewhat, if you pay attention to who is talking about it. The developer is great, good luck, and thank you for your work