Episode Released: November 12, 2012
Spartan Ops
Episode 2: Artifact
Episode Description
An artifact brought onboard Infinity endangers the crew.
- Chapter 1: Clean Up
- Chapter 2: For Science
- Chapter 3: Hacksaw :: No One Left Behind
- Chapter 4: Pelican Down
- Chapter 5: Gagarin
Obtainable Achievements
No One Left Behind 20
Saved at least one Marine in Chapter 3 of Episode 2 of Spartan Ops on Heroic or harder.