I played all the way through. Nicely done! Here's a detailed review:
Design [3/5]: Having to control both what you're seeing and your player's movement at the same time is an interesting concept. Having said that, I don't think it's explored anywhere near its full potential in this game. The bulk of my gameplay was broken down into two phases: the planning phase and the action phase. I would typically stop moving and use the light to look around and then actually make my moves in the direction I wanted to go. I think that idea is executed well within the game, but there's not much more to it. I wish there had been some situations that require me to use my light and move at the same time for some variety. The core mechanics of the game allow for that type of gameplay, but the level and enemy design never seem to require that from the player. The enemies are a nice addition, but I never found them threatening. I don't think I was hit by one even once.
I think this game would have gone from being interesting to being really good if there had been a puzzle element or enemy type that requires you to keep the light on it while you move around in the dark. I just felt like this game was lacking the sort of situation where you needed to move around in the dark. Again, the core mechanics allow you to move around in the dark, but the level design, puzzle design, and enemy design never require it from the player, which is disappointing.
Having gotten all of that criticism out of the way, here's some positivity: what you actually did implement is executed very well. Exploring is fun, but never frustrating. It's cool that you have to keep a mental image of everything you've seen so far when navigating the level (especially in the levels with keys and locked doors). Nice job on this one!
Adherence to the Theme [5/5]: You only have one little sliver of vision in the game. Well done!
Originality [5/5]: I think this is one of the strongest selling points of the game. I've never seen a game where the sole focus is controlling the light with the mouse before. I've obviously seen games with light controls before (horror games especially), but that always seems like a texture element rather than a core mechanic like it does in this game.
Good job! Keep making games and keep up the good work!