If you haven't had the chance to play Mass Effect 3's cooperative multiplayer yet, you're missing out. This mode pushes players to coordinate tactics, complete objectives, and take down advancing foes. Even at the lowest challenge level (bronze), the battles are intense. When you crank things up to gold, all hell breaks loose. Only the most well organized players stand a chance.

Game Informer reader HK-47 just sent me a video of an impressive gold-level match featuring four hilarious Krogans. They make this run look easy at first, but as you'll soon see, not even their headbutts can save them. Somehow, they manage to finish the fight.

Most of the Game Informer staff is still cutting its teeth on bronze matches, but Joe and Miller just graduated to silver last night. Make sure you send them congratulatory tweets!