To start the E3 Xbox conference we saw some Halo 5 campaign game play. We saw as spartan Locke and his team are tracking down Master chief and his spartan Blue team. As you play the campaign you control your team and tell them what to do. Also with the game play we see that the Prometheans are back and there appears to be some new enemies and weapons.
they also showed a new multiplayer game mode called WAR ZONE. its a big team battle type mode with 24 players and it also mixes A.I. It incorporates both story and multiplayer into one huge setting for some intense game play.