GOG.com API integration for GameMaker: Studio / GameMaker Studio 2 · By YellowAfterlife
Hi, my game is up on Origin as well as GOG and wondered how feasible it would be to make this work for Origin achievements?
I have no idea how dlls work, sorry :(
That would require a separately written extension, much like Steamworks and Discord wrappers did (all three are open-source so you can take a look at general differences).
If there's SDK documentation and a budget, it might be possible to write a wrapper extension, but I can't tell off-hand - there doesn't seem to be any publicly accessible information about the SDK.