Walkthroughs for custom maps.

("The Last Crusade")

It seems like you're living a normal life and solving puzzles, but it turns out that you crossed the event horizon some time ago, and according to the laws of physics, you won't be able to return (except with the help of a cheat time machine). The very fact of such a period is stressful, although the author tries to shorten such periods to a few days. But, for example, in the case of the white tent, the flight beyond the event horizon can last for several in-game months.

So, the player can make an inconspicuous wrong choice in some place, and as a result, after a few months, they will find out that they will not be able to complete the map because of this (it's good if there are old saves)? How high is the probability of such an error?
And why is the white tent listed immediately in both the pros and cons?
And what can the author himself say about this?
Maybe someday I'll try to complete it on the easiest difficulty level. And if I succeed, then I'll aim for something more "mature".