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Recently installed it. The game turned out to be quite interesting.
I especially liked the separation of magical and physical damage (it's definitely influenced by King's Bounty 2).
Without reading the manual, I started the first campaign on a difficult level, playing as the Necromancers.
I chose the path of blood. My hero is level 13. After clearing out two nearby NPCs on the first turn, I earned enough money for one hero, and hiring him doubled my army (and the bonus of 2 liches per week is also good). I systematically cleared the area around the Castle and captured the lower fort with the graveyard in the first week, and built unit buildings in the city while simultaneously increasing the income from the town hall. In the second week, I captured the area near the gate and built the Capitol, upgrading liches, skeletons, ghosts, and the Citadel to level 1.
I returned to the Castle, upgraded all units on the first day of the third week, and bought the entire contingent (a special treat - the army now has 23 arch-liches).
I went underground. At the beginning of the fourth week, the Demons were eliminated as a faction.
To be continued...
This is my second attempt. In the first attempt, I went inside on the second week - it was a waste of time, as it is not possible to capture the Demon Castle. I restarted the game because the pace was completely disrupted.