great game, no matter what people sais..
with an good plan, even the last boss is easy..
need more upgrades, and lvls.
also an history behind itwould be good. (3/5)
elll what if theres 3 teleporters :P
but agree on that pipe is good, for killing the zombies.. i killed about 100 to take one badge, while watching tv. didnt even watch the screen.