Thoughts from playing:

• Title screen looks good.
• Intro music is nice and mysterious sounding, though one of the sounds (something like a fan or a propeller) in the background is a bit harsh.
• The brown crystals have a pretty irritating sound and having multiple of them on screen causes the sound to start stacking and distort.
• Very difficult. Light runs out very quickly and if an enemy is active you spend most of your time trying to find refills and flicking the light on/off instead of making progress.
• Hidden switches are fun to look for and the story delivery through short cryptic messages works very well and fits with the mystery aspect of the game.