Truly disturbing demo!
I would highly suggest for those, who are sensitive to the topic, not to play this, otherwise the demo is excellent. It provides enough information for us to know, who are we dealing with. Usually, the "reverse horror" projects are mundane, light, less gory and dark, but this one - hits all the marks.
One small issue - after the characters started to record, it said to play the music and then, the mouse pointer glitched out and I was unable to click anywhere. Maybe you can fix that. Otherwise, solid entry.
Best of luck with this.