So now that the save files are not stored in the registry anymore, does anyone know how to delete those?
Wait, he changed the save file to Json? I just found that out.
I suppose you can just delete the whole folder under the registry.
Edit: I just tried deleting the whole folder from the registry and it lost some of the screen size settings, but the character save was totally OK because it was loading from the Json.
The game created a new registry afterwards just for the general settings and some keys that start with "0". (Probably for the default values or something)
Tldr: Deleting the registry is totally OK and the new Json makes it much easier to cheat than the registry.