I think I found the basic 1 - 4 ones (the obvious ones). I felt like there were clues with the skin in the hallway, (and something else about skin elsewhere) but I wasn't sure where to put the two-and-two together. I also have pretty potato memory :(
Well, I certainly don't know the best way to align voice with text, so if you were to explore a narrator idea then I'd definitely want to nail it with text first before figuring out the audio portion.
It was also hard for me to track how many of the endings I've gone through. I think some kind of checklist would help, especially if it's perhaps in a form of a picture? or text clue? that way you can hint to the players that endings lead to others. Regardless, I'm definitely not the go-to person for puzzle design advice, because I don't do any of that. There's this discord server, I've heard it's filled with folks who are pretty into puzzle games https://t.co/c9ibJWVhUp?amp=1 (might be worth dropping your build in there for puzzle design advice). Otherwise having a friend/playtester record their playthrough with their narration could help with the design as well.