Troubleshoot why the keeps overwriting your new file.
Press .This shortcut syncs your in-game save file with your Steam Achievements, instantly unlocking everything you've "earned" according to Steam. the binding of isaac repentance dead god save file link
All 637 achievements are triggered.
If you want cloud backup for this save, turn Steam Cloud back on, then upload the new file to the cloud when prompted. Troubleshoot why the keeps overwriting your new file
If you cannot find a clean save file, there is a second method to create your own Dead God file instantly using mods. turn Steam Cloud back on