Battlefield Bad Company 2: Onslaught Mode detailed.

DICE and EA have released more information on the upcoming DLC pack, Onslaught Mode where you and up to 3 friends get to play co-operatively in defending one of 4 scenarios from enemy waves. Taken from BattlefieldBadCompany2.com:

FIGHT TOGETHER FOR VICTORY!

Expanding the Battlefield: Bad Company™ 2 online multiplayer experience, Onslaught Mode delivers the first online co-op Battlefield action to PS3 and Xbox 360

Up to 4 players can team up and put their squad skills to the test across 4 enhanced multiplayer maps, fighting against enemy land, sea, and air forces such as the new Mark V SPECACT boat. Work together to secure and hold a series of capture points in the quickest time possible and compare your stats on the Onslaught leaderboards against your friends and other players across the community.

With 4 different levels of difficulty, including Hardcore, Onslaught is the ideal battle ground for Battlefield: Bad Company™ 2 players, whether new or seasoned veterans, to perfect their squad play skills!

SQUAD MODE: 1-4 PLAYER CO-OPERATIVE MODE AGAINST AI ENEMIES

MAPS: 4 MAPS DELIVERING DIFFERENT GAMEPLAY EXPERIENCES, ALL WITH NEW LIGHTING/TIME OF DAY. VALPARAISO, ATACAMA DESERT, ISLA INOCENTES, NELSON BAYNEW ENEMY VEHICLES:MARK V PATROL BOATMISSION:BATTLE AGAINST TIME AND TRY TO BEAT YOUR PERSONAL BEST

LEADERBOARDS: COMPARE YOUR STATS ON THE DEDICATED ONSLAUGHT LEADERBOARDS AGAINST YOUR FRIENDS AND OTHER PLAYERS ACROSS THE COMMUNITY

DIFFICULTIES:FOUR DIFFICULTIES - EASY, NORMAL, HARD, HARDCORE

ACHIEVEMENTS:8 TROPHIES AND ACHIEVEMENTS

Find the teaser trailer for the DLC, below. No confirmed release date or price could be found, we'll let you know when that information is announced and concrete.