Are they coming or not?

Yes when gog galaxy final release will be available

Do you have a source? Games on Galaxy already have achievements.

Also, nice sheep ;)

I'd also like to know the answer to this question, just checked Steam, where you get 64 achievements.

One is to reach the manner, it's the one, that most players got and "most" means "only 17 %" ... so on steam less than one fifth of all buyers play it?!? Has the game such a reputation, that people don't dare to play? I could understand this, because you should only play it, if you learned, how to lose :D ...

And GOG achievements are available in some new games even on the client like witcher 3 or rebel galaxy...

No i don't have a source because i asked weeks ago on french forum and gog team said that they will integrate achivements update after update if galaxy. But some new games have already the galaxy api compatibility. But it will come for other games in the futur