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The winner promised to create a description of the battles and a walkthrough. This will take some time. Podnevki asked, I'll post it in a few days.
But in any case, there are already 2 completely different walkthroughs.
From Tollicandro:
http://zalil.ru/33505982
and from me:
http://zalil.ru/33505977
We managed it in 3 months.
Message from medstrax
The winner of the contest, if he manages to do it in 3-4-7
Question to Sir Tollicandro. Maybe you can unlock on HP?
Gorbik doesn't want to transfer the prize to you. He replied in a private message that he is principled :) but he will gladly unlock you.
If, of course, you agree with AmberSoler and Ivanhoj, then you don't need to unlock... what was the reason, by the way?