Damn, you scared me! Very well set up with the suspicious sound in the background and the keycard disappearing, and then the jumpscare. I had to run back to the beginning area, and tbh turned off the game, I didn't want to go back that way :)
Small details: I miss a sound effect when picking up keycards. It was unclear which doors gets unlocked by which keycard. One idea could be to change the light on the door to the card colors.
The graphics are of high quality, and I like the detail that there’s a light glow around the player character when you are in a very dark area.