how do you get all the new endings ?
Viewing post in Enter the Expansion Mansion comments
All of them stem from the Devil in the Library. Many off the wishes will either have no immediate effect but will add an epilogue to the story as long as you don't get a "bad" ending. Others will send you directly into a new ending.
Some wishes are only available if you've explored enough or the wife is big enough, so do plenty of exploring before you make your wish.