Hahah, just to add to anyone looking to get the When Kongregate Attacks Badge, you don't even need to win the challenge! I lost and still got over 15,850 points - it's all about the accuracy basically. Just use a Dual Machine gun, Radio Plasmid Gun and two of those buffs that send out decoy balloons.
Good fun. Don't understand why everyone hates the game, although it DID take me two attempts before the game decided to give the card to me. I doubt many people will be willing to pay either.
It's really not as bad as people are saying it is, but it did seem it little lackluster. Once you win one game there isn't much else to do; as the A.I. is rather simple, there is no high score table, and a lack of power-ups. Not to mention there wasn't an 'Out' boundary. Still, the graphics and sound were spot on and it was a good premise, executed well enough.