Whatever
It's another zombie defense game. Woohoo.
The STEEP difficulty curve is not what makes a game fun. I can barely make it past level 1, then it's impossible to make it past level 2 because I had to spend all my time repairing my fort. Maybe I'm missing some sort of special tactic that allows you to win, because a headshot does little more damage than a body shot.
Other than that, I guess it's alright.