4A Games has kicked off its Metro: Last Light DLC series with this week's release of the Faction Pack on PC, Xbox Live, and the PlayStation Network. The pack is available for $4.99, and arrives as the first of four add-ons bundled in Last Light's Season Pass.

The Faction Pack adds three new single-player missions, each of which casts the player in a different role from the warring Red Line, Reich and Polis Rangers divisions. 4A will continue to release Season Pass content throughout the year with the upcoming launches of Last Light's Tower Pack, Developer Pack, and Chronicles Pack.