Set between the events of “Halo 3” and “Halo 4,” “Halo: Spartan Assault” explores the first missions of the Spartan Ops program and dives deeper into the backstory of Human-Covenant wars. Play through the eyes of either Commander Sarah Palmer or Spartan Davis stationed aboard the UNSC Infinity as they fight in never-before-seen battles against Covenant forces.

With 25 unique missions featuring unrivaled action and intensity, the single-player experience allows you to compete against friends in Leaderboards or hone your skills with Weekly Challenges. Replay the missions to collect more than 40 in-game Achievements and Medals.

For fans who already have a prospering Spartan career aboard the UNSC Infinity, “Halo: Spartan Assault” lets you earn experience points (XP), all-new Achievements, and emblems for your “Halo 4” Spartan, with additional integration features available after launch.

Halo: Spartan Assault for Xbox One and Xbox 360 will pit gamers in a galactic-scale war against a persistent and overwhelming enemy from long ago – the Flood. Watch each other’s backs (literally) in the action-packed online Co-op multiplayer mode, and go in strong with an expanded arsenal of weapons at your disposal.

Play longer than ever with the all-new online Co-op mode and the Operation Hydra expansion that delivered an action-packed addition to the single player campaign.