Ashes to Ashes Achievement issue

Try this: Problems with Xbox One achievements and challenges

Seen that theory to do with the Reapers, interesting but canne imagine it being that. I think they have just fluffed it and expected fanboys to be happy with the ending which clearly, most aint. As for the 1050 achievements, i think the extra 50 is two 25G
achievements for the Ashes to Ashes DLC

I can finally say that I'm part of this group thanks to Wingman709 posting this link that I finally tried:

www.trueachievements.com/.../ashes-to-ashes-achievement.htm

Follow the steps EXACTLY!

Yes only Ashes to Ashes was affected for me. I have all the other achievements on the list. I got all of the other achievements before the issue started happening for users EXCEPT for Hello Nurse. I got that one just a few weeks ago. In fact here are
the dates of these achievements:

Clever Girl: 2/25/13

Bird of Prey: 6/12/13

Pigs Can Fly: 2/27/13

Size is Everything: 1/8/13 (Also I was mistaken in the OP when I said that Size is Everything must be done in one life; I had it confused with another achievement. Therefore, ALL achievements affected are cumulative)

Hello Nurse!: 8/30/14

If I had to guess why Ashes to Ashes was affected but Hello Nurse was not, I believe it may be based on if you had any progress toward the achievement before the Champion's Bundle (and the Title Update) came out. The reason being is that I never use the
regeneration field, which is required for Hello Nurse, but I use forerunner weapons which would count towards Ashes to Ashes. I believe I played 1 game on the Castle DLC maps before the glitches started happening(I wasn't into Halo 4 that much at the time),
and in that game I could have easily gotten progress towards the achievement. And since I didn't use regen field, I wouldn't have gotten progress for Hello Nurse, which maybe why I was able to unlock that one.

add me, still need a couple of chapters to complete insane "ashes to ashes" and the prologue