Looking for something new to play, I decided to try this map (although I don't like playing as Dwarves or Humans).
At first, the game seemed boring (although I was playing on a normal difficulty level), so I chose Vitěk with his machine gun as my main hero, and I didn't have any problems with the Utopia of Dragons, the 1st outpost, or the "Narkoman" (drug addict). I successfully invaded the Dwarven empire and stirred up a hornet's nest. And then, from the cold darkness, the Dwarven hordes emerged, and the real fun began. As a result of the guerrilla war, which was waged with the help of Vitěk's ballista and the "Berserk" spell, all of the opponent's heroes approached the cities I had captured without any artillery or creatures capable of moving behind the city walls, and the remaining hordes of lava dragons died in packs under the unopened walls, because Vitěk's cannon destroyed their catapults on the first try - the result was always the same - the enemy heroes were forced to flee in disgrace. The cunning Rolf avoided this fate for a long time, but in the end, it also befell him.
As for the sisters, I hid Natasha in the Sanctuary of Monks at the beginning so that she wouldn't get in the way, and I started developing Masha with her advanced logistics, keeping her as a supporting hero at first, and then made her the main hero of this war.

There were no problems in completing the map (the enemy approached the walls of my castle only once and immediately self-destructed).

But it was very interesting to play, so a huge respect to the author :)