Nice.
The minigun/jackhammer combo ended the game, and having 2250 hp for the base didnt really help the zombies cause out much. Poor bastards couldnt even get close as fast as the lovely shotty spits those rounds out. Nice work, if you make a better version try for more skills and maybe some allies to take a bit of the edge off you when your outnumbered. Make em namable so when they die you can be like "NO! you killed "blank" i will destroy you all he was my favorite!" ... lol it'd be more for fun than anything.