Hey MischaPetya. Sorry, I'm bad about chiming in with comments on quests, but I did play your quest up to LV 8.

The first few levels I thought were extremely solid--very well done--however I switched versions of your quest to a newer one at that point without knowing that the changes you made were all the enemy types, etc. The problem with such sudden broad phase changes is that you really have to go through the entire game and rebalance everything; this is why it's usually dangerous to do this sort of thing. It was a good challenge, but I think it really hurt the overall flow of the quest. Exploration and searching became more like grinding, and the levels became longer (seemingly). All things considered I think the original version is a much more solid quest, so to be fair I'm going to replay it all the way through in that version. So yours will end up being the last quest I play.