There's kind of a big slowdown between putting a unit down or leveling a unit up, really interrupts the flow. Like when you buy a unit the game kind of freezes for 2 seconds unlike the other protectors, but still this is my favorite tower defense series.
.... This is one of the only medium badges I don't have and I kill the boss and the millisecond I do a leftover bullet kills me. This is almost as hard as You Have To Burn The Rope.
Awesome, I was facing Clive in hard mode and 10 seconds in he glitched or something and fell of the cliff, buff the chainsaw there's no point in it if you have the gatling gun.