The thing is that Witcher 2 has achievements since it has been released but only for steam. There were none for the retail box version which could be redeemed on gog.com later. There was also none Galaxy whatsoever when the game was released. So either its a bug with galaxy - in that case it is already posted on their mantis bug tracker or the game has to be updated to support galaxy - but I might be wrong but the lack of responses here speaks for itself - but hey Witcher 3 is the priority now - achievements works there so galaxy already running them even they are greyed out in the settings - maybe that is for the overlay option ? Because on the forums Developers have stated that achievements are already up and runnign for some time now, I've also read that some games need to be updated - which appears to be W2 case... but who knows. Time will tell...
