Once you stepped in Prescott's apartment and then manage to escape through the elevator, it will lead to "The Accused" ending.
There seems to be a bug causing the stranger to spawn outside of its intended location when the police arrive.. let me look into that.
Thanks for your feedback! Enjoyed watching you play :D
In the YT video you can clearly see, that after fully completing the game and achieving the "good" ending, I've reloaded the game from Prescott's apartment then running straight to the elevator and still got "survivor" ending... while a policeman laying completely dead in the foyer, lol.
https://www.twitch.tv/videos/2082404102 - here, a full twitch VOD. Watch from 00:45
and edited piece of VOD:
I've tried reloading multiple times and getting the same thing every time. This moment, the first "reload", is still on the yt video, I've just cut the rest straight to when I restored my other save files.