When Arkham City was released, there was a bug that when you exit the game your savegame files disappear.
I heard about the problem and I played the game without exiting. At that point the fix was unknown, but now it is solved. I already played most of the game but at one point the game just had to crash.
I fixed the problem now but I don't want to play all over again. I'm looking for a way to skip directly to that point in the game (somewhere around battling Mr. Freeze).
Up to now I've found savegames for PS3 (I have the PC version), and tried cheats from Arkham Asylum(modified), but neither helped.