Not sure where the Tower theme was supposed to come in, but I'll always enjoy a good Star Fox-inspired romp. Had some bugs in the browser version, including some freezes and one (I think) crash. The audio also seemed to get choppy when a lot of effects were trying to play on top of each other.
On the gameplay, I think adding a bounding box would be a good idea. I felt like I was outside of the planned stage most of the time, so I probably missed what I was supposed to do. Also, while the aim assist was a good idea, I think it's a bit too loose. I saw the yellow crosshairs lock to things my actual crosshair wasn't near, which was a bit disorienting. Lastly, the dialog boxes tended to get in the way of some of the action.
But neat idea, and some bugs aside, not a bad execution! Cool stuff!