Forum:Game completion achievement issue for the Xbox 360 Borderlands 2

So my friend and I decided to go for the complete all side/main missions achievements in the main campaign as well as the dlc’s. We just finished the main game and he got the achievement but I didn’t and it shows us as having exactly the same missions completed. This shouldn’t affect anything but he started the campaign and was player 1 the entire way through. Also we aren’t playing over live or anything, I downloaded my account onto his xbox and signed in every time we played. Anyone got any ideas as to why I’m having this issue, I’d really rather not have to redo everything……….



