Kill an infected teammate with a headshot before they become a zombie in any mode.

Complete the third mission of the U.S.S. campaign.

Fully upgrade an ability.

Witness the beginning of the Raccoon City outbreak.

Complete Stage 1

The End.

Reimprison Ahriman.

Final Healing.

Collect 600 Light Seeds.

Find the lowest point in the world.

Find the Assassin's view.

Make a negative coop morality choice

Kill 400 enemies with assault rifles, submachine guns or shotguns