I wanted to reply sooner, but then general life happened, so here we are, 10 days later :)
First of all- thanks for playing!
As for the fire rate- I kept it slow on purpose. It made sense for me that Pope's revolver would be a very powerful weapon and shooting it should be deliberate.
Sounds. After almost a year after making my first game I find that sound is a difficult part of game development for me. I totally agree- there should be more to the soundscape.
Ghosts. You are the first one to ask about them! Great, but also not, because it means that the hints I left were bit too invisible. The nature of ghosts is mysterious, but leaning towards "spirits of suddenly departed". That's what the hero of the game would tell you at least. What no one noticed (or at least no one told me if they did) was that all the objects are connected to the cause of demise of the spirit. Seems I have to do some work on my environmental storytelling.
Glad you liked the game, and thanks for the comment!