Fun and quick game with some interesting ideas. I didn't really like the darkness mechanic, but that might just be me. I feel like if my character is glowing, the light shouldn't be directional, or at least, the light should be a little more forgiving. I'd try bumping up the player's acceleration and invulnerability frames a little, too. It took me 3 tries to beat the game and each time I lost was due to a combination of not having vision, having poor movement because of that, and then taking multiple hits from the same enemy. With a bit more work, this could be pretty good!