HEY! I just finally got arena mastery and magnum opus was not given to me! I got my last immortal medal, got breakout mastery, got the unstoppable commendation done, but not arena mastery. Arena mastery reads 3/4. Hows that possible when I have EVERYTHING mastered. I’ve put over 75 days into Halo 5, reached level 148, and got champion 3 TIMES. Half of that was spent trying to make progress towards Arena Mastery for the satisfaction and the Magnum Opus emblem. You want proof, look at my profile on Xbox and look at my clips, you can even look at my YouTube channel later tonight. GT is WizWaz23 YT channel is WizWaz 23.
I expect an answer back with some reasoning why this happened to me. And I expect to have a that emblem soon.