I HAD almost 10K, but something happened and I lost gamescore. Perhaps you guys can help me.
I don't have Xbox Live, so I get like all of my achievements offline. But one day I recovered my gamertag onto my friends 360 because he was going to put a month on it for me with his card, and we could play together on one TV. So I did, and after I was done, I recovered my gamertag onto my 360. Then once I do, I'm missing TONS of achievements. I had all but one achievement for Dead Space, and now have hardly any =[ The same goes for a couple of games. How can I get them back, if possible?