The platform mechanic is really creative! Solid in the dark but falling through them in the light makes for some great level design. One of the most fun games I've played in this jam!
The candles felt too rare for me, I got stuck a few times without them, so maybe add a few more or drain the battery a bit slower? Also, once a ghost is near you, you have to use your whole battery or you die. Maybe the ghost could disappear after a while? And fullscreen didn't work for me, the game stayed the same size.
Great job!