From the related link you get it when you pick up the Max Ammo power up the zombie drops while in the building see related link
go to the teddy bear and pickit up and take it to the ammo box where the guns are stored
yes there is actually go look on youtube its real i can do it It is not a glitch that you can do and who would trust an easy to fake YouTube video. The word infinite does not mean a little more ammo it's meaning is never ever running out or having to reload.
There is an infinite amount of levels and zombies. You can never kill them all and win and can only play until you die
It never ends it can go on forever. There is unlimited.
actually you cant complete it because it has infinite levels the levels never stop by the way the zombies get harder and faster the higher you get and the move around more so its harder to headshot them
Zombies have never existed before.
Theres never ending rounds of zombies.
No, zombies never existed.
Never
Never
Zombies are never actually 'alive', they are simply reanimated corpses. but no there are not going to be any zombies. :)
Zombies were never real, they are made up for stories.