I mentioned this in the description, but the reason you need a file that's cleared the DLC to unlock Hermit's Room is that it's the intended play order. There's context for Hermit's Room in the DLC.
No problem! Hermit's Room won't unlock if you don't have a completed DLC file, though, to be clear. It's part of the base game CoE download, but it's hidden even when you clear S+.
