Why wont my achievement unlock in Battlefield 1 after defeating the entire game on Normal?

I have been playing battlefield 4 on the xbox one and my achievement for using the assault shield for 5 minutes wont unlock

well sometimes when you do a achievement it wont unlock ,if you look at the achievement's it will say 100 percent unlocking normally when this happen's it will unlock later... another thing Ive noticed being a achievement hunter is some achievements are
bugged and that's the developers fault...............apb reloaded >.> has had one broken for a year

another thing is my kids used cheats in games and disabled the achievements but it will normally warn you but i would check what the achievement progress says if its 100 percent unlocking it will unlock sometime in the future even if your not on the xbox

I have this same problem. I went to play this morning and starting playing battlefield when I was awarded two achievements. Without doing anything more, my achievements started to show up for all of the other games I have. My gamerscore remains at 50 from
the two achievements unlocked in Battlefield and that is the only game that has not gained back all the achievements I previously had. I saw something earlier on xbox.com that said they were addressing the problem, but i can't seem to find it now. It has been
hours and everything is back to normal (after I remade my avatar myself) except for my previous achievements in Battlefield and the correct gamerscore. Any answers Microsoft?

Yep, under game it says unlocked. But if you click tje pop-up after the achievement unlocks it is not showing it in the list with latest achievements. And it wont unlock the rewards points. Noticed it in the past three days.

Unholy, what did you do for the Achievement that is for defeating the finial boss with out getting damage? I'm not sure if it means getting hit by the floating objects or the enemy.

Also anyone else having problems with the Eradicator Achievement? Killed over 4000 still wont unlock. (These are only the two achievements need).