Interesting concept! Was not expecting to move the tower and have missiles be the main attack haha.
I think the controls for the keyboard could be improved. I had a hard time shooting with Z and walking at the same time. And everywhere else we are using the space bar as an action, so it was a bit strange.
Also I had this weird bug where the text for on the upper left corner got clipped and I couldn't read it so well.
All in all, very interesting idea!