Assimilate alien tissue at the crash site

Escape the Battery Park evacuation center

Clear the Emerald Hill Zone 1.

Gain Your First Rank

In Ascension, kill a space monkey with a fire trap.

Destroy 10 mutated pods in any one level of Training Grounds.

Reach rank 10 in Combat Training.

Burn 1 000 Zombies

Perform 500 Headshots

Complete Campaign Mode In Co-Op Mode

Complete Mission 10 (Any Difficulty Level)

Fully Upgrade All Stats Of Any Weapon In Campaign Mode

Complete Mission 7 (Any Difficulty Level)