Halo 3: OSDT

CAMPAIGN
The year is 2552. The Covenant control the city of New Mombasa. 
They are searching for something beneath its darkened streets. You are an Orbital Drop Shock Trooper.
Your orders: Stay alive, meet up with your scattered squad, and escape the embattied city. 
Stop the Covenant and we just might win this war.
THE COMPLETE HALO® 3 MULTIPLAYER EXPERIENCE.