GamaGanda: The Undead Nightmare DLC for Red Dead Redemption will contain both single-player and multi-player content. The multiplayer component of this DLC consists of a new game mode named “Undead Overrun” and it was just revealed by Rockstar Games.
Gather online with your friends to defeat wave after wave of the living dead. In order to survive you will need good teamwork and make good use of the new weapons available, one of them being the Holy Water. A trailer has also been released to show some undead killing in progress. You can watch it below: