Master Chief Collection Achievements not Unlocking

I have been encountering a large amount of problems when trying to unlock Master Chief Collection Achievements today. Out of the 8 achievements I have met the criteria for, only one successfully unlocked, and two say "Done! Unlocking..." but haven't actually
unlocked, the other 5 show no signs of unlocking. The two achievements that say "Done! Unlocking..." are 'Delta Halo' and 'Lock Down your Thirst'. On a side note the Halo 2 style Cortana MCC avatar that is unlocked by completing the Delta Halo mission is
also not unlocking. Also the achievements that I should have completed but are not unlocking are "The Maw" and the achievements you get for playing through the entire Halo CE campaign on Legendary. (that should be four more achievements, one for each difficulty)
I did complete the majority of Halo CE in co-op on a friend's XBOX One console, but that shouldn't matter. Lastly, the achievement app has been having trouble tracking my progress on achievements, I was looking at my progress for the Legend achievement and
it said I was only 42% complete with it when yesterday it said I was 80% complete with it.

:)

 

Xbox One. Achievements won't unlock

i have problems unlocking achievements they say there unlocked but their not.. when im playing halo master chief collection no achievements...

 

343 industries

343 industries please help me. I need help unlocking a glitched achievement in odst halo master chief collection. Audio logs. I've Done Everything And Was Told To Contact You

 

welcome to the mess that is the MCC. I've unlocked over 300 since Nov 11 and many times had to do things twice or 3 times to get the achievements to unlock.