The 01 save is before the first encounter with the pymarid head. Kill it and go to Jack's Inn to collect the dog key. The 02 save is in the hotel lobby.Go to Room 302 to activate UFO ending and the Observation Room next to it for the dog ending. Defeat Mary you also get I.Q test. And you can start new game to acquire the blue gem and the Green Hyper Spray. Enjoy!!!