Halo 4: Campaign Requiem Co-Op Legendary Bug

Hello. My Friend and I have been playing the Halo 4 campaign on legendary co-op. We noticed that after completion of the level Requiem, we didn’t get the achievement, nor does it say we completed the level in the menu. We have tried completing it twice and it does go to the next mission, yet we are given no sign of completion. If anyone has had this bug happen to them or knows a way around it I would be more than grateful if they could help me out. Thank you, -Sublime720

Im having the same issue. There has not been a fix as of yet.

It’s not just on legendary. I just beat the campaign on heroic and noticed I didn’t get credit for Requiem completion or even campaign completion. Frustrating. I hope they fix this soon.