For an app I'm developing, I'd like to retrieve all of a user's Google Play Achievements. Looking through the Play Game Services API, I'm not sure if this is possible. It seems like you can only get Achievements for a user for a specific game, and I don't see any way to get all of the games a user has played, either.
Has anyone been able to do this, or something like this? I expect the answer is 'no, that's not at all possible', but I'm hoping there's something I've overlooked.
No, it's not possible. Privacy considerations mean the user id is different between games, and this information is not shared.