Halo 4 Midnight achievement not unlocking

Games Halo: The Master Chief Collection
1

I have played the Halo 4, Midnight mission several times now, and the achievement for completing does not unlock. It is very annoying as this is the only one missing for me completing all campaigns in The Master Chief Collection, which is worth some achievements.

343 please fix this.

Br.

Christian

2

And suddenly it unlocked, strange.

Well i’m good for now, but it still needs fixing. It should not take 3-5 times through before unlocking.

Br.

Christian