Tried searching for something similar but didn't find anything. Ok, I was playing Dragon Age: Origins - Darkspawn Chronicles. When I finished it I was supposed to earn two achievements. As soon as it made the sound of the first one unlocking my Xbox froze. Turned it off and back on and noticed I was missing one. Played the DLC again and didn't unlock anything and after a couple of tries I gave up. Did a search and the achievement am still missing is buggy, people had trouble with it. Followed some tips like deleting saves, DLC, recovering my tag, playing on other Xbox and nothing. The question is: Can an achievement glitch if your game freezes? And no matter what you do it will not unlock because the system/game believes you already have it? Or is it just bugged and it will eventually unlock?