Mass Effect 3 | Retaliation (Multiplayer DLC)

Mass Effect 3: Retaliation is a substantial DLC expansion focused entirely on the cooperative multiplayer mode, requiring the base game to play. This content significantly escalates the challenge by introducing the formidable Collector faction as a new enemy type and adding treacherous environmental hazards—like acid and lightning—to existing maps. It enhances the experience with a new Challenge System for tracking progress, unlocking titles, and comparing achievements, alongside new Turian class kits and powerful Collector-themed weapons to augment player arsenals.