Really great game! So hard though! I wish there were a little more visual information - its really hard to tell how you are doing, health-wise! Also, I only made it to about the middle, but I don't think I ever got any ammo... am I missing something?
The game is visually very appealing - really nice work. The only thing I don't like - and this is being picky - is the background. I think its a little distracting, and doesn't really match the rest of your minimal aesthetic. I wish it were a gradient, or a soft glow.