Pao Archipelago

The hero already had a decent army, but it was weaker than the ones that joined him. And it was mostly undead joining. Well, never mind. The map is difficult up to a certain point, until the hero's army becomes stronger than the neutrals. So far, I've only completed the Dungeon and emerged outside. And regarding resources, I'm completely out of mercury. I haven't been able to find a mine... Maybe I haven't looked hard enough. And I could also use a mentor. Otherwise, the AI has given me an unappealing starting area and the "Death's Advance" skill. But I don't need that. I would have preferred scouting with navigation. In any case, the map is captivating.

Added 1 minute ago
Yes. I was playing on the impossible difficulty level.