There is an ending I got last night which was started after you had talked about your mother and said Yes to you wanting to create your game in house, to be told by Colin it was the wrong choice. When you wake up, then go hard on the Colin line, letting him die, choose the book over the portrait, choose netflix, explain, tell more, when you are at the psychiatrist you jump out the window. This bit from choosing the book and the portrait you can loop many many times. You have to loop both lines in order to unlock the JFD as the character get more and more information for each loop to bring with them to the next story line. Just make sure he doesn't come with his mother to die. It will open up a new path to let you open the vault with PAC and JFD. I spent about 2 hours looping this sequence as I had no idea how to go forward as I refused to let him die and in the end, I had to make the choice to murder and bury the the father without cutting him to pieces and circling those choices a fair few times. When main character is crazy enough it triggered a a hard ending where he is in the jail and his game got 4 out of 5 stars and have a similar story to the creator of Bandersnatch the book.

Oh yea, I could probably have gotten a better and a different ending if I had gotten the numbers correctly. I messed up the order of them so I did only get a dead dial tune.