To be honest, at the time of writing this review, I'm only about 30% of the game, and I've already made two or three missions that the indications of the guide were very vague. I then realized that the layout could sometimes be criminalized, because of unclear positioning of some illustrations. But usually they are the same explanations that remain too vague to really know what to do when.
Ultimately, this book makes me the effect of an art-book guide with bonus than anything else, the presence of evil sandstone maps detailing the location of all items to find. To summarize, there are quite possible to do without ...