This is awesome! Did you make all the 3D models? I tried using 3D on my entry but gave up, so I appreciate the effort.
One thing I would suggest: the spacecraft controls really well, but I think it is missing a way to make hard turns or tight maneuvers to make positioning easier. Most times I needed to make a turn to attack a tower, it would take too long and the targets would be facing the other way, which meant I had to turn again, and the same thing kept happening over and over.
Great entry, congrats :)