What the hell, Kongregate? Do you just not care about the players on this site? C'mon, knock this game off the challenge. We've been waiting for days now.
The fact that you can buy special upgrades means that there is no real fairness in this game. That's why there aren't any badges, because they would be meaningless.
 "Burrito Bison Revenge"){kind=icon}
 "Level Up!"){kind=icon}
 "Easy Joe"){kind=icon}
 "Bloons Tower Defense 4"){kind=icon}
 "mini Tower Defence (mTD)"){kind=icon}