I received this achievement upon opening MCC (Steam) today. Maybe a bug with the update? Bobogoobo (talk) 16:30, July 14, 2020 (EDT)
- Check your achievements in the Halo Waypoint service record. You've probably earned it long before this update. A lot of Steam achievements have been bugged. —SPARTAN331 23:56, July 14, 2020 (EDT)