Halo 3 odst campaign completion achievements
Oni alpha site
Not sure when just realized recently while looking through achievements but the odst legendary campaign playlist registers as completed in game.
Made your first hot drop into HaloWaypoint.com
Halo 5: Guardians MP Beta participant.
View your Service Record on the web.
Become a member of an active Spartan Company.
Awarded to subscribers of the Halo Legendary Crate
Awarded to players of Halo: Fireteam Raven.