I can certainly fix the bugs, BUT the problem is that I suspect the map author made it just for the sake of making it. To complete the map, you need to find the Clairvoyance Keychain. The only place it appears is in the far bottom-right corner of the Dungeon—which is practically unreachable—and the second place is an event located in the labyrinth (the event occurs immediately after killing 4000 evil eyes), but to actually get it, you have to kill 9999 evil eyes IN EVERY SINGLE CELL!!!
I haven't seen any other ways to get the keychain. Although, maybe if you look hard enough, you can find one.
I would write to the map author, but I don't know English.
If anyone needs them, I can upload other maps by this author as well.

I forgot to mention the most important thing. The starting hero has this keychain, BUT he cannot move from his spot because of the purple border guards. And finding the tent is impossible (it's located on the underground level near the Castle which is situated on a question-mark-shaped island).