Season Four: Retribution

Season Four: Retribution is the fourth expansion released for Call of Duty: Extinction developed by Nakamura Interactive, and published by Morningwood Arts. Its contents only includes two brand new Extinction Episodes which are set in 2046, three years after the events of Episode 8: Awakening and before the events of Call of Duty: Retribution, the third and final game in the Rose Squad Trilogy.

The expansion is not covered by the Expansion Pass, which only covers Seasons One, Two and Three. Its available for $19.99. Season Four: Retribution serves as a tie-in to Call of Duty: Retribution.

Content
After the attack on Nirvana, the Korma Empire did not only target the Eclipse Navy's fortress world, but also their headquarters: the Luna Shipyards in order to permanently stop their warship production. As the Korman warfleet arrives, the defense forces gather and fight against the war armies of the Korma Empire, including hordes of Grimm.
 * Episodes

With the Beacon having been damaged from a skirmish with a Galactic Rebel group, Rose Squad are present at the Shipyards and are ordered by the shipyards overseer to cut off the Grimm from reaching the shielding generators station to prevent them from disabling it. After successfully defending the shielding generators station, the Eclipse-class supercarrier deploys several Naka-class SN38 Frigates from its hangar bays and proceeds to destroy the Korman warfleet; Rose Squad is sent to infiltrate a Korman cruiser in order to obtain information about the Korma Empire's navy. After getting the information, the Korman Emperor's flagship the Crescentia Molpe disables its cloaking systems, revealing a warship much larger than the Eclipse supercarrier and destroys the majority of the Luna Defense Fleet with the support of smaller warships.

After the supercarrier and its four Eclipse II-class assault carriers, and almost all one thousands warships are destroyed, Naval Command gives the order to remaining warships to retreat while ground forces also do the same. Rose Squad retreats to the Beacon and escapes, watching as the Korman warship rains down a hail of laser fire at the shipyards and its ground facilities, decimating whoever was unfortunate enough to not escape in time.


 * Episode 10: Defense of Luna
 * Episode 11: Eclipsed Retribution