

Yes, can confirm that a major aspect of the genre is total exploration and collection of items. Hollow Knight, due to it’s difficulty and attraction to the “dark souls” adrenaline junkies, has added importance of achievements for things like Steel Soul mode (aka ironman, i.e. no deaths).
Also the genre has a long history of rewarding speed running. Metroid’s secret endings were hidden behind fairly strict time limits, for instance.
It’s been a while since I used their app but I vaguely remember some support (?). Although at that point you’re basically using GoG as DRM, but I appreciate the attempt to give Steam competition in that space. The whole concept of meta gaming in general is kind of monopolized.