Played Gears 3 a few days ago and some friends and I finished up some Horde mode cheevos. Got on today and everything is wiped. My achievement progress for ranks/competition in coop, etc. is gone. For example, I have beaten the game on Normal, but when I go to select chapter I can't, only the very first chapter is unlocked. I have the Pack Rat achievement, but it says I have no collectibles, and so forth. I have no clue what happened. Anybody else experience this?