Making the game creepy and getting that ambiance were our main goal.
The jumpscare you are talking about is what we call the "bad ending". The "true ending" can be done by not turning off the switch that displays the window. This way, you will see that you are "stuck" in a loop. And you must go backward and enters the room by the opposite of the loop. We are aware that too much people are getting the bad ending only, and don't go to the true ending after... That is a level design problem...