So, I heard this game comes with a PDF manual that also comes with a lot of informations to make the game a bit easier to get into. It seems, though, that GoG did not get the manual. At least I don't see it in the extras,
Is it not included? Will we get it at a later date?

For now, I just jumped in blind and took some informations I found on the steam forums. I still get slaugthered on the first floor but at least I start to survive more encounters in a row and figured out how to rest to get HP and SP back up.

Ah, there it's hiding. Good. A few other games have the manual available as extras for reasons, so I was a bit confused.
Thanks.