Completed H4 legendary Solo... No achievement?

Games Other Halo
1

Beat Halo 4 in MCC solo on legendary for the achievement and it says I only did 50% of it?! I got the other achievements for completing the game and at no point did I have Co op. Even the missions each say completed solo legendary with no symbol of completion in the Co op box. So what the heck??

2

I have the same problem unfortunately. It seems to be a lot of other too. It’s really annoying…

3

I got the bromaggedon acheievemet playing solo … work that one out

4

I am waiting until hopefully they get all that fixed B4 i start the story.