Rockstar unveils ‘Outlaws To The End', a free co-op multiplayer mission pack due this June for Red Dead Redemption.

The pack will be available this June for both 360 and PS3 (no timed exclusives here) and will offer “an entirely new dimension” to Red Dead Redemption's gameplay, says Rockstar.

“Multiplayer in Red Dead Redemption offers players a whole new way to encounter the massive open world we've created, but we felt the experience would not be complete without co-op game play,” said Sam Houser, Founder of Rockstar Games. “With these missions, we wanted to create new ways for players to share in the experience of engaging with this amazing landscape.

Outlaws To The End is the first of three planned co-op packs and features six new multiplayer missions “full of outlaws, epic gunfights, and revolution for 2-4 players”. There'll also be additional multiplayer XP rewards and brand new Achievements and Trophies.

Three of the six missions have so far been revealed:

Walton's Gold: Walton's Gang have taken control of a mining camp rich with gold. Fight through the camp and load your mine cart with as much gold as you can carry and get out as fast as you can – Walton's boys have rigged the place to blow.

The River: Ride a raft down river, taking out rebel encampments along the way until you reach the rebel stronghold of Nosalida and a final epic battle for the town's massive weapons caches. Watch out for Gatling gun-equipped enemy rafts.

Ammunition: The Mexican Army has the town of Tesoro Azul under siege. Storm the gates under heavy cannon, Gatling gun and sniper fire to destroy the Mexican artillery placements.