Make a directory called Profile0 in c:/Program FilesCodemastersPerimeterResourceSavesNow make a txt file with notepad called data. Do not give it a .txt extension. Just call it data with no extension. Put it in the Profile0 folder.Now copy and paste this into the data file:[General] name=ABBYCHEAT lastMissionNumber=28 difficulty=1 Save the file and run the game. All levels will be unlocked.