Added 6 minutes later
I completed the map on Hero difficulty, although not on the first try! The map has several hidden features; completing them will make it easy to pass the map even on Hero difficulty. I won't talk about them so as not to spoil anything. Overall, the map deserves a 10 out of 10. Design, plot, adherence to the lore, and the environment – the author has thought of everything. The author paid great attention to scripts and cutscenes; there are many of them here. A particularly large amount of work was done in the finale, specifically in the Mausoleum of Knowledge. I would also like to note the logical nature of the text dialogues; by the way, I didn't find any errors. I was surprised by how the author was able to depict the water surface in the last cutscene. This is the pinnacle of skill. If the author ever finds the time and voices it, similar to the "Search for Truth" Campaign, the scenario will become a cult classic. But that's just a dream.
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It's enough to look in the library to understand that the right choice was made at the beginning (light vs. dark), and the Witch should immediately take education to learn the other low-level spells; otherwise, randomness in the only castle can ruin the Walkthrough, and you shouldn't touch the Dwarf castles immediately if you don't want to cause yourself problems with demons. The main villain cast a spell once and that's it; after that, he only used evasion. It's better to take Banshees for the last battle, because the enemy has a high defense (his defense is incredibly high – you can't break through it with a direct attack without attack bonuses).