Singleplayer: Complete Running with Wolves...

Complete act III.

Complete the "Arctic Recon" Special Ops mission on any difficulty.

Finish 75 quests cumulatively.

Kill 250 zombies with modified weapons.

Play Sector Control

Singleplayer: In Breaking Bagram, destroy 2 vehicles with a single 2000 lb Laser Guided Bomb

Completed "Tranquility Lane"

Completed "Galaxy News Radio"

Completed Render Unto Caesar.

Find 25% of all Collectibles.

Complete 'Murderbrawl XXXI'.

Complete Act 2.