The AI is horrible for the towers. I've lost a map a few times because my sniper towers with a range covering the map decide to hit the just starting off normals, instead of the splitters that are already halfway through.
What I would do would be make it so every punch you throw do a certain % of damage AND a certain % of healthcare bar out. And also make it so you can't like, cheat by holding down the buttons.
Wow. Why was the last medium badge added? I mean, if you go to the computer without knowing it ends, you have to do the whole freaking game over. Just, crap. Game itself was alright, but I kind of dislike these games anyway. :p