If you have any constructive suggestions regarding the Archmage's army, I'll be glad to hear them.

Perhaps it would make sense not to give him such a large army right away, but instead give him a castle with all the buildings constructed next to the hero, and probably an artifact +1 to sand or a mine, so he can afford to buy dragons. And then it would be that the sooner you come to him, the weaker he will be, and if you take too long, it's your own fault, and you have to deal with a hundred dragons however you want. Because it was a bit frustrating to demonstrate tactical skills to quickly defeat everyone, and then just sit and watch the time pass.

Added 1 hour 30 minutes later
Hmm... I'll probably finish it on the third try. I managed to take the tent, but there's this damn dead end, and I'm stuck in it. And there's no boat on the map:( So far, I haven't come up with anything other than replaying the last month, hoping that the enemies will move differently.