@CrimeScene: It's not a glitch, you have to walk to a certain level if you want to hit the zombie, you can freely move your crosshair but there is a limited area where your character will actually shoot... in short, go stand face to face with a zombie...
Apperantly, when I choose to ''kill sum more zumbays'' after a few other runs, there are green portals cracking from the floor and then there are climbing zombies out. So far so good, but after I killed them all and the portals have disappeared and I go back to grandpa b'cuz there are no more zombies to kill and I still have a count of 120 zombies to go, he says ''there's something new out there'' and I have to figure out how I should do that. Little help!
I reached prestige mode... is the background the only thing about it? Meh... it's kinda boring after playing it 2 hours... awesome game 5/5... 150k score on endless defence
 "Shootorial #0"){kind=icon}
 "The Last Stand 2"){kind=icon}
 "Endless Zombie Rampage 2"){kind=icon}
 "The Enchanted Cave"){kind=icon}
 "The Gun Game 2"){kind=icon}