Thank you for the long, detailed and highly favorable comment!
The game is fairly compact, so I think you reached at a point where you had a good idea about what the game is about, and then you turned it off. The solution to every riddle (including the Holy Water) is usually a couple of screens away, and as you mentioned, the nuns may have had to say something about it! But yes, you got the game's vibe and I'm glad you could appreciate it, even if you don't usually like this style of gameplay.
Regarding the sound, if 3 people out of 3 complain about the music, I should do something about it. The best thing I can do, is to release a version without music. And I just did, problem solved!
Fun fact: I saw your name in the jam a few days ago and it made me smile because my latest game was named EnigmAttic.