I'm not familiar with how achievements work on Galaxy. I'm pretty sure I've earned a couple in ToM, but they don't show up anywhere that I can see when I select the game in my library. I don't think I've seen any pop up while playing either, even though I have in-game notifications enabled.

Thanks. I feel like GOG should not have "Achievements" listed as a feature on a store page unless the game specifically supports Galaxy achievements.