The fact that the author of the walkthrough broke it up into parts based on the characters in the game is a major mistake on the part of the author of this walkthrough. Characters are interconnected, ignoring this aspect leads to game deadlock.
The same applies to the total lack of hints system (if not to consider them as thoughts that occasionally hit the main character), absence of a clear system of quests.
As for the too early meeting with Cleo, which breaks the game, then probably everyone who tried to play the game faced this problem
. I just saved the game about once a minute, it helped to do a rollback.
Although I think that everything we write here is a cry of a screaming man in the wilderness - as I understand it, the developer does not look here.