Hey man,
Pros: It was a cool little game. Enjoyed the screen shake when I'm shooting (but it gradually increases to the point where you cannot see clearly in the game). The controls for the keyboard and mouse were easy to understand. Plus I just love the idea of mass destruction with the mini tank!
Cons: However, I don't fully understand as to how you used the theme in this case. I wished there was a way to see how many hits it takes before I died by looking at a health bar or percentage or how many enemies are on each level. The resolutions for the game also made it clipped off on the start menu when you play from the browser.