happy days earns you all the trophy on the game
you hack
with the computer
No there can not be 4 players on Call of Duty Black Ops Zombies on PS3 offline.
You can not get unlimited ammo in Black Ops for the Wii or the PS3 or the Xbox 360. I don't know whether the PC gamers can hack a system to do whatever they want
Yes
Probably
There is no PS3 game titled Call of Duty Zombies. It's a phone game. The PS3 game is Black Ops and you get additional maps on the PS3 for Black Ops by purchasing the 1of the 4 Black Ops map Packs from the Playstation Store at $15 each
Yes your "Hacking" the system.
Easily
3arc unlock
You don't get that
If you hack on black ops, your profile will freeze if you're online.