A new trailer from Assassin's Creed Unity shows off co-op gameplay from the next installment in the stealth action series. Word is: "In Assassin’s Creed Unity, you can play as a melee expert, agile infiltrator, or a silent master of stealth and join forces with up to three friends to take on a variety of co-op missions. Whether you’re tackling heists or assassinations, you’ll need planning, teamwork, and a combination of your whole team’s complementary skills to succeed. And if you do, you’ll be handsomely rewarded."