I also finished the game , but didn't manage to start nightmare mode as all my progress was lost.
Everyone who plays this please be careful as losing over 30 hours of progress is no fun....
The way I lost my progress was that I added a 2nd local player to the game and when I started everything was back to 0%.
If anyone has any idea's how to get the progress back please let me know...
Last edited by RAINKINGX1; 10-25-2013 at 07:58 AM.