I’ve never had to restore a backup (yet), but to me this is the best feature of Restic.
I used Duplicati for a while (I think it was Duplicati, not Duplicacy) and although the backups seemed to work, I kept reading about people having trouble during the restore process.
Restic is a slight chore to get set up with the environmental variables, figuring out which directories to “–ignore”, etc… but man once it’s set up it’s just great.
I don’t have an answer, but if you research how to boot Linux off a USB stick, maybe you can get that tool to run without having to wipe Windows.