Glad I've had the time to test this one out! Really cool concept, using your voice that can draw the monster's attention to open doors and charge your flashlight is so well thought; BUT i think the monster is maybe too difficult to avoid, I feel that having a monster that has a really poor sight, but a great hearing might be more interesting (like the eyeless dog of lethal company, or some enemies in It Steals)
I spend most of the levels just running in random direction because the monster saw me when i exit the elevator, and rush toward the exit while screaming to open the door.
I like this concept a lot, and I can easily be expend into something more fleshed out!
Also the aesthetic is really charming! I love the vibe so much, and the shader on the UI is well made!