Saw your tweets and was on the lookout for your entry. :)
I like the idea behind it, but as the others have mentioned, the controls are a bit off putting. Maybe remove the need for pressing control and just use the arrow keys for aiming? Though that really depends on if you have any plans to expand it and if so what they are. The gameplay was fun and frantic at parts, and very addictive at it's core. I'd definitely love to see what you could do with the idea without the time constraints.