Nice game. But there`s a game breaking bug for me on world 3.
I can't complete it. When i finish wave 5, the guy just stands there firing arrows at nothing. No more monsters, nothing more to do. I believe it's related to the "Burrower" (mole guy). He just goes underneath the earth, sometimes dead, sometimes not dead. When he goes under alive, he never comes back, i already tried killing it first, and already tried leaving him for last, nothing works. Have tried this stage five times already, the same thing happened on all my runs. I tried leaving the game running, and watching it for over 5 minutes, just nothing happens, the sentry just stays there, alone, firing arrows at nothing =/