How to perform a hard progress reset / have multiple save files in Miska’s Cave
File Location
The folder containing user data for Miska’s Cave is located under:
[Your user folder] -> AppData -> LocalLow -> Soulflee -> Miska’s Cave -> Saves
Alternatively, you can type %appdata% in your Windows search bar and go back a folder to get to your AppData folder quicker.
Resetting/Creating Save File
Deleting or moving the miskasCaveSave.save file from its folder will reset your entire progress. Upon the next launch of the game, a new save file will be created starting from the beginning. You can replace the save file again with your old save in order to “load” your progress. Make sure you keep a backup of your save when using multiple save files!
Thanks to mbkgamer for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.