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I know I am a little behind the ball, but I just recently completed all chapters in the first 5 episodes of Spartan Ops. I believe this entitles me to the "Dedicated to Crimson" Achievement.

Dedicated to Crimson

Completed all chapters in the first 5 episodes of Spartan Ops on any difficulty.

I can look in the "Play Chapters" menu and see that all chapters are completed at Heroic or better (most via matchmaking). Why have I not received the achievement?

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up vote 7 down vote accepted

Apparently this is a known issue although 343 has yet to add it to their known issues thread on Waypoint.

Luckily, the fix is pretty easy. Apparently, the problem is that the achievement will not trigger in matchmade Spartan Ops. Start a Spartan Op solo, even on easy difficulty, and you should get the achievement after completing the Op. I recommend Episode 1 Chapter 1, as that worked for me.

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Yeah, I did this last night and it worked for me. I was pretty bummed when I didn't get it the other day after finishing all of them :( – agent86 Dec 7 '12 at 15:19

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