yes
It is found in the eastern parts of Mexico.
Go to on line as usual, and go to your challenges and pick undead overrun.
you cant
I am sorry but there is no offline co-op
No it is not, it is only multiplayer online.
yes, you can have up to 4 players offline
its on Undead Nightmare
You cannot play multiplayer mode without internet connections.
No you can only use them in the undead nightmare.
You cannot get Red Dead Redemption - Undead Nightmare on the PlayStation Portable.
You can't play coop on Red Dead Redemption or Undead Nightmare.
No you cannot join with the zombies in undead nightmare