Starting today, those within the Xbox Insiders program can begin testing improvements to Achievements that make it easier to celebrate your accomplishments and how they display on your profile.
Achievements will now have a new look and feel, including updated icons and animations when you unlock classic or rare achievements. Notifications will also match your own custom colour as before.

Coming later this month, Xbox gamers will be able hide any game from your Achievement history on your profile, giving you more control over how your accomplishments are presented. Get rid of those low scoring games with 1 or 10G. Hidden games will still count towards your overall Gamerscore.
When you’ve earned all available Gamerscore for a title, you’ll now see it highlighted in your achievements list, so your hard work is easy to spot. This gives you a quick, at-a-glance way to celebrate full completion. You can also filter to see these completed games.
If you aren’t part of the Xbox Insider Program yet, you can join the program by downloading the Xbox Insider Hub for Xbox Series X|S & Xbox One or Windows PC.
