Let me be of some help, as part of the challenge of the Mausoleum is navigating your way through it.
In essence, what you're aiming to do is get to the heart of the Mausoleum, where the Revenger's enemy waits. But to do so, you need to acquire keys to progress through locked doors - these keys are attained by fighting (or using items if you acquired them in town) two sub-bosses.
If you would like, I have attached a map of the mausoleum to help guide you through.
Also note: if you wish to prematurely end the story, you can return to the entrance of the Mausoleum and leave. Later on, if you re-encounter the Crone who reads you the tale, you'll have the option to start at the beginning of the Mausoleum rather than town.
(And depending on how you played the town portion, re-starting at the beginning of the Mausoleum may yield a different end...)
I hope this helps! -Zaozoruzhna
