I have no idea how to lose or win ?!
It reminded me of the Atari 2600 game Atlantis. It was a bit difficult, but not too hard. One thing I would suggest is the middle shooter should regenerate more often.
While the graphics and everything seems to function nicely. It doesn't seem to have any real purpose. Yes I understand that you made it in a week. But there's really no reason for this game. The aiming is odd and the instructions you give don't really tell you how to select your attacker. Like how you're supposed to hold the arrow key down to keep it on the attacker you want to use. Or even though you say we have to protect the cars from sh*t. You don't really lose the game until the cars and your attackers are covered. Needs better instructions and better usage.