Xbox PC app files point to unannounced Mythic Achievement

Files in the Xbox PC app update released 22 September 2026 point to an unannounced Mythic Achievement, Xbox's equivalent of PlayStation's Platinum Trophy. Xbox watcher Klobrille flagged the find, according to Eurogamer. The files include a starred and laurelled symbol and a 15-second unlock sound. Microsoft has not officially confirmed the feature.