I have listed the endings and how to get them, along with some achievements.
Bad Ending 2: Input the wrong password on the 4th floor
Bad Ending 3: Push the door to enter/eavesdrop. The dean speaks and chooses to help Mary escape from the nursing home (2nd then 1st choices). To escape you must run back down the hall and down to the first floor, the way out is the place you should have unlocked before inputting the code on the 4th floor.
Bad Ending 4: Push the door to enter/eavesdrop. The dean speaks and chooses to help Mary escape, being caught by a robot and brainwashed (1st then 1st choices). This one is way easier and you may achieve by attempting 3, you just need to let her catch you.
Happy Ending: Eavesdrop on the dean’s words and choose to save all the nursing staff. Next day branch choose to save Mary (2nd then 2nd choices). When you get to the blue room select the first option.
True Ending: Eavesdrop on what the dean is talking about, choose to save all the nursing staff. Next day branch, choose the nursing staff (2nd then 2nd choices). When you get to the blue room select the second option.
Normal Ending: Entering/eavesdropping. Dean speaks and chooses to assist Dean (2nd (fail task) then 2nd choices)
*The choices are the ones where you can see Kalina (the character you play as) not the, what I assume are, yes or no questions.
Mary:
Dean:
Robot Nurse:
It was made by a YouTuber called 阿江Ah Kong 2 and a big thank you to them for helping me overcome the language barrier.
*English version coming soon*
Please keep in mind the pandemic has made many set backs in the progress of their translations so please be patient and supportive!
If you want to help support than purchase the $0.99 DLC, you get all of the sound tracks and some super cute Kalina emotes 🙂
“Missed Appointment”
“Find the leftover”
Not completely sure what this means, but I’m assuming it has something to do with a side quest given that it is the least achieved.