To earn money quickly, go back and do some beginning levels. Do to the great amount of health your characters should have left, it will give you several thousands.
@ Nunchila101 (your first comment) all kongregate games save to your computer, not the profile. I really wish it saved on your profile too, because sometimes I play games on one of my school's computers, and it is annoying having to do everything all over again.
On the last level, there's a glitch where you can run through the floor and fall to the edge of the screen. At least it kills you, otherwise I'd be stuck.
What? So, after finishing the game, you can't see the bonuses unless you're on their website? I know this comment is probably going to be rated down a lot, but thanks to that and not being able to save, I'm only giving this game 4/5.
Why do the CPUs stink? I mean these were the results for the last round:
Score Kills Deaths
Me 14 14 2
Cpt. Simmons 3 3 4
Pvt. Miller 2 2 8
Pvt. Richards 1 1 3
 "I, Robot"){kind=icon}
 "Space is Key"){kind=icon}
 "Pickies"){kind=icon}
 "Spear and Katana"){kind=icon}
 "Bill`s worst day on the hill"){kind=icon}
 "Gravitee Wars"){kind=icon}
 "I wish I were the Moon"){kind=icon}
 "Dino Run"){kind=icon}
 "Edmus"){kind=icon}
 "Icebreaker"){kind=icon}
 "Faultline"){kind=icon}
 "DuckLife2: World Champion"){kind=icon}
 "FPS-Koza (test)"){kind=icon}
 "Cursed Treasure: Level Pack!"){kind=icon}
 "Amorphous+"){kind=icon}
 "Super Stacker 2"){kind=icon}
 "Sift Heads World Act 1"){kind=icon}
 "Raze"){kind=icon}
 "Flight"){kind=icon}
Make sure not to be too close when attacking.