Does anyone here have DRM-free version of The Raven: Legacy of a Master Thief (Digital Deluxe Edition)?
Where is digital deluxe content located?

Come again? Do you mean Steam version when you are saying DRM? If you mean as such, then it should be located on Steam's directory\steamapps\common\The Raven\Digital Deluxe.

Sorry, that was supposed to be DRM-free.

Yeah, but from where? GOG isn't selling the Digital Deluxe version.

I asked because there are more than one DRM-Free Deluxe Digital versions.

Anyway, there is one fail-proof way to find out whether Humble offers the Digital Deluxe extras for the DRM-Free version (as sometimes they only do so for the Steam one); go to the bottom of your library, select purchases, then search the bundle in question (Humble Weekly Adventures 2), click it and then you should see a page with the Steam keys and the DRM-Free downloads. Above the DRM-Free downloads, you should see options to change the download to a Mac or Liunux version (if available), but you might also see downloads for soundtracks, artbooks, or any other extra. See the attached images for two examples.

Nope, only soundtrack is provided as separate download.

Obiously I've asked Humble's support first about this and they told me that it's installed "somewhere". I explained that I was searching through the files and that I can't find it, after which they basically told me to fuck off.

After searching I found this.
Digital Deluxe Edition includes:
The Raven – Legacy of a Master Thief main game
Soundtrack
Story book (plenty of background info and artworks)
“Making of” booklet
Papercraft mask of The Raven (printable)
Digital poster (printable)

While I only have the bold one listed in library.
Also the DRM-Free package is now updated.
So, may be remaining extras are inside the rar file.

DRM-free package is updated because before that it didn't work at all. Seriously, it was completely broken game, you couldn't install it at all and it took them 3 weeks to fix it.
The new one has only installation files, no extras.

Hmmm...

Is it possible that the extras are installed alongside the game, like the Steam version? Is there a folder called Digital Extras/Digital Deluxe/Content/Bonus or something similar?

It should be there, but the problem is I can't find it.

Hi, in the end do the installation files include the other deluxe digital content?

No.
I've actually contacted support of Humble Bundle, King Art Games and Nordic Games. They accused each other of messing things up and finally sent me as "solution" some of the deluxe extras in e-mail.
AFAIK they never fixed installation files, but I gave up on it.

Aww, that's a shame, I gave away my Steam key. I won't regret a good deed, but I would like to read the stories :( I suppose I could try e-mailing them and see if they'll send the pdfs to me too. Thank you for the info!

Hey, update! The missing PDFs and stuff have been added to the Humble Bundle library! Good on HB for fixing it in response to my query, whereas Nordic completely ignored my e-mails.