Spartan Ops

Spartan Ops is Halo 4's Cooperative Mode replacing Firefight mode from Halo Reach and Halo 3: ODST. It will support up to 4 players and tie into the Spartan IV Program and the Campaign of Halo 4. The enemies that the players will face are yet to be revealed but Covenant are believed to be an Enemy in the Campaign so it is likely they will be in the Spartan Ops. 343 Industries has confirmed that It will not be paid DLC and be included free in the game. eventually the Master Chief will meet up with the UNSC Infinity and this will somehow tie in to the rest of the story.