Complete chapter 1 in the Single Player Campaign

Defeat ten enemies in a row with hand-to-hand combat

Get a hit with an EMP

Create a 'New Post' or 'Write a Reply' on the Wall

Get a hit with a Spike Strip

Wreck a Cop

Fill the Nitrous bar then use it all in one go without hitting anything

Wield the knife in single player or co-op mode.

Eliminate 3 enemies with a single explosive.

Help Your Country To Clear The Virus Infection

Complete Mission 1 (Any Difficulty Level)

Collect An Armor Piece

Kill a Utahraptor