i have completed the campaign twice and have the end of war achievement but it hasnt give me the one for doing it on legendary and now when i turn the game on all missions are locked and my saved game is no longer there. why is this???
Same thing happened to me. Have you played on another Xbox recently? I think it has something to do with syncing data. Either way I don’t think there is anything you can do to recover your save files sorry. I’m planning on running through legendary with a friend, just to get all the missions back.
EDIT:
The latest community update stated that the next uodate will restore lost game progress. Hopefully your save comes back.
There’s a thread in the support forums for this issue, but as noted above it will be fixed when the next patch comes out