I think you have something here, but it just needs a little more polish. Movement/fps was sluggish, like the others said, but I had no trouble with the combat, which I really enjoyed. It's very strategic, it pays to wait to parry and refill your energy even if you could rush the enemy down, because you NEED energy.
I got stuck when I reached a terminal down a corridor eventually, interacted with it and the game locked up :(