I'm sorry I can't put all my comments on one comment, but please, accept this as my apology, THE PASSCODE FOR THE PLACE WHERE YOU HAVE TO TYPE THREE NUMBERS IS 361.
Btw, if you want to mute the music, turn your speaker off or mute your volume. SnailsAnimation doesn't need to waste time adding that 'mute music'. He's already trying to make this game awesome.
The Occult Rune sure is an extemely rare rune. I found one but i accidentaly sold it. Annoyed by myself, I continued to play to find another one. By the time I got another one, i'ts been like a year now.