I can see this game being played like an RTS game. But the hero's HP is too high, which doesn't deliver the feeling u mentioned in the game described "and make the humble hero's life a living nightmare".
The controls are a bit hard to play around with, especially with that green circle that I don't know what's its purpose. On the other hand, I like the polished level with animated scenes, cards, and UI. And I like the idea that u can just change the map. Gives me the feeling of being a powerful lord even though the map differences aren't that obvious.
With the number of AI objects in the scene, making everything work in 48hrs is still impressive. Simplifying the controls and making 'us' more powerful would make it feels better IMO.