Mass Effect 3: Retaliation, a new multiplayer DLC pack, is now available to download via Xbox LIVE. The free download is billed as the largest upgrade to the Mass Effect 3 multiplayer to date.
The DLC comes in at 436MB and can be queued up on Xbox LIVE here.
Look out for the content soon on PS3.
New enemy faction
Prepare to face off against the Collector Praetorian, Scion, Abomination, Trooper, and Captain. Reports have also come in that Cerberus has enlisted the Dragoon to their ranks and the Geth are deploying new Drones to the battlefield.
New Class Kits to Unlock
A host of new characters have joined the war to fight this new threat, including the Turian Havoc Soldier, Turian Ghost Infiltrator, with many more being added on a regular basis.
New Hazard Versions of Existing Maps
Wage war across six maps, featuring new environmental hazards and traps. A regular rotation of Firebases will be introduced to different hazards as they come under attack. Survive the onslaught of Acid, Lightning, Meltdowns, Sandstorms, Swarms and Whiteouts!
New Unlockable Weapons
The Collectors have also brought deadly new weapons to the fight: the Collector Assault Rifle, Sub-Machine Gun, and Sniper Rifle. Unlock these weapons and new equipment upgrades to build to your arsenal.
New Powerful Upgrades
Outfit your weapons with new ammo modifications and fortify your gear with unique upgrades to defeat even the toughest foes.
New Multiplayer Challenge Feature
Think you are the best soldier in the Alliance? Make sure to track your progress in the new Challenges database. Complete various multiplayer assignments and feats of strength to unlock titles and banners to display in-game, and then compare your progress against your friend.
The Challenges database tracks various in-game statistics, such as your N7 Typhoon usage. To earn challenge points, you'll need to complete mini-goals. For example, accumulate 140,000 points while using the Typhoon in multiplayer and you'll be rewarded with 10 challenge points.
What Can You Do With Challenge Points?
Challenge points are used to unlock cool in-game multiplayer bonuses, such as new titles and banners. Want other players to know that you're a Council Operative? You can do that. Want to be the envy of your friends with a flashy new banner to display in the player lobby? You can do that, too!
Challenge points lead to unlocks, and unlocks allow you to personalize your multiplayer experience.