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I completed the map in 95 days (as the hero). The map functioned well: there were no crashes or freezes, and at the end, I received a message with an entry in the Hall of Fame. It was a solid experience. In my opinion, the quests are overly complex, and the scenario lacks dynamism. (The latter largely stems from the former). The main character is a logistics specialist, but you spend a very long time just milling around near the Castle. I didn't like Gretham as a starting hero because of the transformation of his initial troops into a "red" tier. In the tavern, I hired Rutger, who cleared the area around the Castle, and then Gretham went on a foreign tour.
The Demons couldn't break through the garrison, neither in the first nor the second attempt. The first time, the orcs deliberately eliminated the guards for some reason. The second time, they wanted to repeat it but were afraid of my hero and retreated.
Gretham broke through the demon outposts, and the orcs, overjoyed, captured the Demon Castle. I watched a cutscene where Knights die while storming the Castle and was surprised. The orcs declared war on the Knights, although it's unclear where Gretham managed to kill even one barbarian hero. Not for long, though; the map finally "came to life." During the five-day war, Rutger and Gretham destroyed all the barbarians.
I didn't understand why the Gremlins with Golems joined (another "long-lasting" quest?). I picked up the Armored troops ("a volunteer squad"), but the Rebel Garrison didn't want to interact with my heroes. I didn't remove the curse and didn't even think about it; Gretham fought perfectly well without magic.
I agree with the previously expressed opinion that the landscape could have been designed more interestingly. The vast territory of the orcs is very monotonous.