(PS) since you seem to have drawn some connections with the sound systems. Here’s some food for thought: you said that you had to turn up the volume in each “layer” which allowed you to put in the password (and get killed each time). But do you remember ever turning up the volume for the very last one?
Okay so… I actually showed this to someone who has very good hearing and didn’t even need to turn up the volume for that one xD. I played through again and turned up the volume (on my computer in real life), which I think means that if the cycle is:
Windows 7: dead person -> turn up volume of mysterious voices -> unlock security -> static -> knocking -> Windows 10: monster enters room -> turn up volume on Windows 10 -> unlock security -> static -> knocking -> 3dverse: monster enters room -> turn up actual computer volume -> unlock security -> whole screen turns static -> REAL LIFE: MONSTER ENTERS ROOM?
But what’s most notable from the first room is that the person was dead, bloody, xs over the eyes on the floor, so perhaps we are the living opposite…
Anyway there’s another layer up from us where the volume did not get turned up yet, perhaps… the monster has yet to appear to KILL…