I'll get straight to the point:
Every time I start a new game with Mass Effect 2, it resets itself. This has been going on for a long time, and I thought it was due to the face that I don't usually play the game online when I'm at home. I've beaten the game, so no worries there, but after the first few times I beat the game, I started to notice that some of my achievements were gone; almost like I never did them. I find that hard to believe because a lot of the achievements that were missing are hard to not get since you have to recruit the majority of the characters you run by to get the achievements. I can't tell you how many times I've played this game over and it still won't give me the last achievement for completeing the game twice.
I'm only concerned that there is something actually wrong with the xbox since it won't save my data either. I completed the game about three months ago and only recently (in the past two weeks) tried to start a new game to see if I could get the achievements back and maybe the problem would fix itself. It didn't; my save data is gone and it reset itself to after I completed the game.
I will state that i have downloaded a lot of the content that goes with the game, so I'm not sure if that has something to do with it, but that's my issue. Unfortunately, that is not the only game that has been affected in that way. I have a few other games that do the same thing, and all my save data keeps disappearing and my achievements are missing with the save data. Since my save data is messed up then my gamer points keep getting reset as well.
Even when you look on my profile and view my achievements for ME2, you will see where I have some of the achievements for the end of the game, but not from the beginning. I understand that it could be mistaken for me restarting the game, but I know that's not the issue.
Sorry for the long winded question, but I just want to know what's wrong with my xbox; it pretty much runs fine other than the save data, and I don't like playing it recently because I have to play through the game again without being able to get to the end of the game.