FWIW for me this was the most buggy part of the game so far:
* the gnarled door cut-scene animation didn't trigger, so I was just left super-confused
* later, the masked enemies are apparently supposed to provide you with some way to knock them out and take off the masks? nothing apparent at all so I just had to kill them. Not sure if that was a bug or me missing something
* when I got down to where the hag is, she's invisible and doesn't appear. needed to douse her with water (apparently any area of effect works, but thanks to the Wizard of Oz I know that water is really the best), and then she just stood there while I pinged her to 0 hp.
