As always, the Steam version of the Game comes with Achievements included in the Game. At the same time, no Achievements are available in the GoG version of the Mad Restaurant People. Why so, and when will Achievements be added to the Game?

cause the devs are currently busy working on Dreadful River and don't have time adding the GOG achievement systems to the other three games which would take a lot of time, maybe when Dreadful River is fully released and they got time on their hands.