Has anyone had any trouble with this game forgetting campaign progress?? I've been extra careful to ensure that I've quit and switched off when there's been no hard drive access but twice now I've been put back a few missions. Was devastated to see this morning that my four hour session yesterday went by completely unrecorded. Side note: Great game.
Could be bad game data. I would delete any existing data for the game in game saves and game data folders and then try again.
No way, really cannot face going back through half of the campaign again, total playtime is about 9hrs as it stands excluding restarts. @Parris - It's very good but very hardcore, I haven't had a chance to check out multiplayer or co-op yet but I've heard they're superb.