Valor Hawk

I JUST completed the campaign on Legendary (it was amazing!) however there is a major problem. I was awarded the commendation and armor for completing it on Legendary but I was not given the achievements for completing the campaign at all and it locked all of the mission from 6 on down and said I never finished them. Does anyone know how I can fix this without replaying the entire campaign? The game will also reset my curret armor, emblem, loadouts, and sometimes lock them again when I sign in. What the hell is going on???!!! bump