What do they feed you guys at DigiPen? There always seems to be a new weird and wonderful game coming out of that place!
Played with a controller, once I figured out that the right shoulder button was for turning on and off your light (and not sending out a sonar ping) I loved it. I agree with quicksand that the light could be a TINY bit stronger - not too much though or it would ruin the game.
I don't think you should make the enemies more visible, I loved the way with the bigger enemies that you were never too sure what was scenery and what was an enemy until you were up close. It makes you use caution, and really ups the tension when you're exploring the unknown depths.
I'm happy with the gun, with the slow recharge time forcing you to use stealth and not just blast your way through the enemies. Though if you're planing on making the game longer, you could have a longer amount of time at the beginning without it, or change things up with some new weaponry - such as charging the surface of your ship with electricity (electric eel style) or decoys.
The ending was superb! It felt as tense and unnerving as a good survival horror game, really left me wanting more.
Bug report: The game crashed the first time I played, just as I turned the 360 controller on. But worked fine after that.
Great work & good luck with the game.