It's a good jam submission. It's got visuals, audio, a gameplay loop.
Constructive feedback:
I have an azerty keyboard so I had to edit the controls to be able to move.
Some kind of counter or indicator so we can see how scared we are of the dark. A life meter more or less. Can I make it to the lightswitch in time? The game over now is a bit sudden. The sound is also a bit loud.