on level 6 add the vertical climb by clicking under the cars and dragging up so the ramp ends 3/4ths of the way up the screen. the cars should flip over and launch off the screen.
really nice narrative between the levels, but the gameplay could've been more interesting. There are a variety of enemies, but their differences don't do much to improve gameplay. the most important ways I can think of to improve the actual gameplay is to make it so it reminds you more of what you're doing, debugging an AI program (all I see is shapes, and that I'm blasting them). second, make the game play interesting even without the story around it. things I liked: the huge squares, not only fun to fight, but freshens the whole wave they're in. also think the final boss was great. made me not want to shoot it. then when I tried to fight it it wasn't a pushover either. didn't like: wavey circles, hard to hit but not interesting. overall a nice experience.
PLEASE add some kind of keyboard control unless you're going to give us a ton more clicking options, because it is impossible to control the robots enough to beat these challenges. Also, the AI really needs to be improved.