Halo MCC achievements not unlocking.

EDIT: Nevermind i did get the achievements, can a mod delete this thread please? Thanks.

Hi Everyone. Last night i completed all campaigns on Legendary, it took me over a year… Here is the problem. Me and my friend completed my last mission which was a Halo CE mission… I only got the achievement for completing the game on Easy… I did not get the others for normal, etc… I have double checked that all missions for CE, 2, 3 and 4 are completed on Legendary. What is going on? If anyone wants to check for confirmation my Gamertag is the same as my waypoint name.

For future reference there is a thread in one of the mcc sections for achievement issues