A bit too easy, finished it with only 3 bonuses and about half the upgrades. Stuffing is pretty dumb, you really NEED to get them all as fast as you can to be able to do any distance.
Bored-quit at wave 22.
- Checkpoints!
- More speed (nornal and fats seem the same to me)
- Health and armor upgrades for ranged unit are beyond useless
 "Swarm Defender"){kind=icon}
 "MadBurger"){kind=icon}
 "Ultimate Tank War"){kind=icon}
 "Battle for Darkness"){kind=icon}