Thank you for your comment! As for the ending the game doesn't really have one in its current state, its more when you feel like you are done and want to finish. Once you select the "finish jam version" option there wont be any more content but the game doesn't quit automatically so you can read the credits message.
I did find a bug which made it so once you reached that option for the despair ghost you couldn't return to it if you left, but that should be fixed now.