I completed the final episode with some of my choices mixed up (game thought I took the food when I didn't) and with the DLC coming soon I want to set things right. However, it doesn't seem that rewinding my save file is going to fix things since I tried doing that before and it didn't work.
I also have an achievement glitch where all the achievement for Episode 4 didn't unlock, but the game thinks they did. I don't want that problem to affect my save file.
What do I need to do to make sure everything is good with the 360 version of the game? I've seen some people say they deleted the game and all of the DLC and then downloaded everything again and that seemed to work. Other talked about deleted their profile and then recovering their gamertag to get stuff working.
What do I need to do?