Great looking game. The visuals, sfx, audio and music are really good. For the gameplay, I would make the light go out a little slower, and the starting radius a bit wider, the game felt a little bit too difficult for me.
Maybe implement a limited consumable of some kind that resets the light to full ? That would give the player another chance to avoid game over. Because, when you find yourself completely lost, the lights dimming, you basically have no chance. Which might be intended, so I don't know if that idea would work with the concept of the game^^
Anyway, great job overall :)