Auto-translated
I completed the map, defeating all enemies. The map isn't as difficult as the first three created by the respected Old Mage, but it's no less interesting. Overall, as the author promised, it turned out to be a large and entertaining adventure. Regarding the rapid spawning of level 7 monsters, I didn't experience any problems with that (perhaps I encountered them too early). The map is, as always, excellent.
Added 6 minutes later
My only suggestion is to make capturing Rainbow Castle a bit more challenging, for example, by requiring it to be done only through Obner.