Walkthroughs for custom maps.

Frankly, I'd call such maps truly hardcore. They're not for everyone (almost no one), but they're impossible to evaluate, and while there's an idea behind them, on the other hand, you can't deviate from the author's vision.

With "Sacrifice," you can somehow figure out a solution (although it's still very unlikely), but with the join bug, there's absolutely no chance.

Added 2 minutes later
Although the Chinese text in the events probably contains hints and clues.