Map testers needed!

That's exactly the point – I need to determine the optimal difficulty level and set it. So that the game doesn't feel like a sadomasochistic session or like beating up babies, in the form of the AI. I think the optimal difficulty level for testing is normal-hard. This makes it easier to determine whether the map is too easy or too difficult.

Thank you, I tried my best. I like beautiful maps, even if it takes a lot of time.

Optimality depends on the player's skill. It seemed to me that you should start on the Queen. Otherwise, there aren't enough resources right away to upgrade the archers. Giving an elixir of life right away seems like an excessive gift, because even with just griffins, skeletons and zombies die on auto-battle.
But even more important than the difficulty level, in WoG there are many other things, such as commanders, for example. How about them, the experience of monsters, and towers, etc.

Beautiful maps are not created quickly!
Campaigns are even more complicated; on one level, one difficulty level might be better, and on another, a different one. You'll have to play everything. Why specifically a campaign, and not separate maps?