Xbox Insiders get an early look at Mythic Achievements
A Mythic Achievement is unlocked by finishing every original achievement a game shipped with, and Xbox has already backfilled the credit for eligible titles completed in the past, including Xbox 360 games.
Xbox has opened Mythic Achievements to Insiders, and the idea is deliberately narrow: you earn one by completing every original achievement a game shipped with, and once it is yours it stays yours.
The rule, and the loophole it closes
Achievements added later through downloadable content or updates do not count against Mythic status, which stops a 2011 game from becoming unreachable because a season pass arrived in 2023. The badge is permanent once earned. Xbox Wire announced the Insiders rollout on 29 September in a post by Alex Charters, a senior product manager, and Eden Marie, a principal software engineering lead.
The part that will matter to long-serving players is the backfill. Xbox has already awarded Mythic status for eligible games completed in the past, including Xbox 360 titles, so opening your profile today can resurrect a completion you finished a decade ago.
Where you will see it
Profiles now carry a Gaming tab that lists achievements, tracks the next Gamerscore milestone badge and collects the games you have finished. Mythic Achievements are marked out with a heroic frame, making it easy to count how many you hold, and you can open a friend's Gaming tab to see which games they have taken to Mythic.
For anything still in progress, a progress bar now sits at the top of each game's achievement list so you can see how close you are, with the option to filter down to the original achievements you still need. Achievements added after launch are tagged as add-on so it is always clear what counts. The same progress information surfaces in the Guide and in achievement details.
Our opinion
Completion badges are as much an engagement device as a trophy, and Xbox has been careful to design this one so that it costs the player nothing to qualify retroactively. That backfill is the smartest part of the feature: it converts twenty years of old save data into something you can look at again, and it rewards the people who were already there rather than the ones who will buy in this winter. The definition, though, quietly rewards patience over skill. Finishing every original achievement is a measure of time and tolerance for collectibles as much as of ability, and the add-on tag will do more to steer what people buy than any storefront banner. The progression bar is the piece that will decide whether this feels like a celebration or a checklist, because the moment a hobby starts showing you the homework you have not done, the heroic frame stops feeling heroic.