If you go back, you can fall out of the map through the door. It feels a bit inconvenient that you can’t smoothly rotate the camera or slightly tilt the view towards the floor - I keep stepping past the tiles by accident.
However, the chase element is genuinely scary, which works really well for a horror game!
Special respect for the fact that no one starts chasing you until you’ve gone far enough - it gives you time to get used to the controls.