thanks so much for making the video. I made out most of what you said but man... the audio was loud, sorry about that one. I completely overlooked this. Thanks for the feedback, I did wonder about the copyright but as I was never intending to make any money from the game, I considered it a tribute to the great games of the past.
Also when you pick up the shield, you can mow through enemies and the cars which helps clear the screen quickly.
Thanks again for the feedback, I always make my game with the idea of making the player say... 'just 1 more try'.