To properly clear episode 1, you must do/not do certain things. There are only a few, and they're listed below.
- Read the newspaper in 3-A
- Do NOT get caught by the spirit in the Infirmary
- Do NOT read all (5) of the Victims notes
Doing any of the 3 things above will result in a different ending, but won't count as a completion for the chapter. They DO count towards the "Multi-Ending" achievement.