Sony released this video today that shows Ratchet and Clank: All 4 One's 4 player co-op in action. Destroy enemies faster, solve puzzles faster, enjoy the camaraderie that comes with surmounting a problem with the help of your friends, or invent a whole new family of swear words when your "friends" can't get out of their own way long enough to even kill the lowliest of enemies. Ratchet and Clank: All 4 One comes out on October 18th.