you can make a guide, because I do not know if I have passed the game (at the time of my release) or not + at some points it is unclear what to do or where to look, and a guide would be very useful
I have one here, but this hasn't been updated for 2 years...
<https://zumdamenhaus.blogspot.com/p/guide-for-pss.html>
For now the cave is the last location. And after you got your revenge against the other 2 shop owners, you have probably seen most of the content by now.