Campaign Data Lost, Please Help!

Hello, and thank you for veiwing my issue. I had just recently beaten the Campaign of Halo 4 single player, and I did not get my Acheivement for doing so. I went to further investigate the issue, and the game is registering that I hadn’t even completed the first 5 levels (Excluding the prolouge mission) If you check my Waypoint tracker, It will show that I have indeed completed the campaign on both Single/Co-op Legendary difficulty.

Another side issue is I lost my Terminals data for missions 2-7. I am trying to redo the terminals currently, but this is still a frustraition.

Is there anyway to get my progress to reshow on my Game again, or am I just swimming in a river of sick with no floaties? thank you for your time and I hope to hear back from anyone.

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Did you turnoff your xbox while it was saving by accident? happened to me in reach

For future save errors i recommend you use Cloud Saves for back ups.