The BioWare Blog announces Retaliation, a new multiplayer DLC package for Mass Effect 3 coming to the action/RPG as a free download on October 9th (10/10 for the PS3 in Europe). This will add a new enemy faction, new unlockable class kits, new characters, maps reworked with new environmental hazards and traps, new unlockable weapons, new upgrades, and a new multiplayer challenge feature described like so: "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."