I think comet is more about multiplayer in games that use the Galaxy API than achievements
The gog cloud save support I think was already in the Heroic Game Launcher for about a couple of years, I think I have my Cyberpunk 2077 saves on there, but honestly I’m not sure
I’m not sure this is going to directly affect that, because their deal talks mainly about financing for the Control game, and the other news is about movie adaptations, so probably it is going to be another team, lead by the newly re-hired Hector Sanchez, working on that…
But who knows, this kind of things are always hard to follow from the outside