Steel Intruder Prototype

This is the first public prototype of a game I am currently working on in Unity.   It's a fairly straight forward top down shooter.  I intend to add upgrades, narrative elements, and a few more levels before I move on to another project.  I hope this prototype brings you some entertainment.  Feedback is most appreciated, and is actually the entire reason I am posting this build, never too early to start collecting feedback. 

NOTE:  The boss is not presently behaving properly since I switched this to be WebGL, but Im done for tonight and just leave what's up as public. Fixed.