Completed Halo 4 campaign on legendary, which is confirmed in campaign lobby with each mission saying “highest difficulty completed” solo - legendary. But when I go into my service record under campaign it states that I’ve only completed the first mission and that I’m in progress! Any ideas on how to fix this other than do the whole thing again?
Were you on Xbox Live when completing the missions? if you weren’t you’ll unfortunately have to do them again you’ll have to do them all again (while connected to live).