Noooooo I'm talking about the files at C:\Users\PUTYOURNAMEINHERE\AppData. I forgot whether Local, LocalLow or Roaming has it but there should be a folder called "STROBOVSKY" in there. I meant try the save data, not exactly the game data.
Look, I got my achievements corrupted and they were all big red Windows error signs. Maybe your save files are corrupted as well.