It was a fun little experience! I really love the feel of dodging ennemies, especially when you find yourself cornered and have to navigate your way back around. (in fact, I almost never used the shooting option ^^)
Only little downside: I feel it just fits the theme, but not enough. It would be great to have an option to trace a ray of light that shows the direction to take (not relative to the dungeon, I'm thinking more of a straight line connecting you to the light goal, that fades with distance, so that you know the general direction and distance, but not the path to take to get there). It could consume light, so that you can't keep it active at any time for instance.
Other than that, I liked it, great job!