Signed the wishlist, I wanted to ask the same thing since THQ Nordic developers are often in this forum.
THQ Nordic is a wonderful company that seems very attentive to its consumers, so I think it's time for all its games to have their achievements on GOG, especially now that most likely they will add many new ones with the acquisition of Koch Media.
Achievements can only add value to the video game by increasing its replayability and challenge level.
boztix: Your opinion is very respectable
Telika: Not necessarily, given that my opinion is that "achievements" are a manipulative device that exploits some not-to-bright aspects of gamers.
My point was mostly that I tend to see the inclusion of "achievements" as cynical contempt for the customers, and the lack of them as a mark of respect. In other words, I was reacting to your phrasing, which associated "featured achievements" with "mark of respect", while I read the opposite into the presence of these features.
That said, let's not get carried away in that direction either. The omission of this device in gog versions is probably more due to laziness than to genuine respect or particular expectation about gog customers. "Non-A -> B" doesn't imply "Non-B -> A".
If the achievements are a manipulative device then also all the other requests of a video game: kill 50 orcs for complete a quest, complete a track in less than 2 minutes for the gold medal, etc. etc.
In a video game one does what it's fun the most for him, and the achievements are completely avoidable if someone is not interested.