Great premise, average execution
Loved the joke, loved the quotes, loved the style - but TOO FUCKING LONG!!
Seriously, 20 minutes of one level of the same enemies? If you wanted to have it that long, it shoulda either been separate levels with boss versions of each enemy, or that each enemy type shows up at different stages - maybe first the spacemonkey fleet, then the pterodactyls too, then the MICE WITH FULLY FUNCTIONING human brains and Obama and it builds up to the climax with the boss.
Alternatively just make the cash things worth more.
And although it's nit-picky, i woulda liked choosing controls. Mainly because my "a" button is a bit worn down from these typa games and the option to use another woulda saved me a couple of times - plus you get people that prefer WASD to arrows...
Final issue was that the medals didn't work. Now all I have is my own sense of satisfaction - and how long will that last?
Funny game, but for the love of democracy freakin shorten it.