I got ending 3 twice, how do I get the other two?
If you still want to know, here's how. (Spoilers below for anyone scrolling through the comments before playing lol)
Ending 1: when Bonnie gets tied up and Carnation comes to save her, tell Carnation that you're going to stay with Hunter.
Ending 2: You know the room where the woman with the mirror is, who won't move for a really long time? At the end, when you've placed all the memory shards, DON'T go in that room. Go straight to the front door and leave instead. Going into that room first gets you ending 3.