Kill Oz with a Blunderbuss in Descent.

Rescue a total of 20 survivors in Infection.

Rescue 4 survivors in a single game of Infection.

Use the cure station to kill 5 host zombies at once in Infection.

Cook 50 zombies with the Magnetron in Infection.

Survive until round 10 in Infection.

Complete Oz's challenges in Descent.

Successfully complete the Exo Survival Bonus Wave.

Kill 100 enemies behind you with the KL03-Trident in Descent.

Cross the water with a teleport grenade in Descent.

Reach round 7 without anyone opening a door in Descent.

Defuse 5 gas bombs in a single match in Carrier.