The first thing that stands out is the menu sound, the button click actually caught me off guard. The quest text is way too long. There's a sound for turning the lamp on and off and for the switch, but no door opening sound. I sat on the couch for a really long time with nothing happening, and I started thinking did I do something wrong? What does the game want from me? Or did I run into a bug?
The atmosphere is tense, and the sound design really builds that tension.