In IX, dismember 13 limbs in a single game while in The Pit

Win 50 games in Multiplayer

Earn 10 medals that are based on Special Issue Weaponry

Earn 10 medals that are based on Special Issue Equipment

Use 10 healing items on Yourself

Interact with an airdrop crate in a Solo match.

Kill 250 zombies using edged melee weapons.

Sever 100 limbs.

Kill 5 Infected in a row with a single blow.

Complete 5 quests in a single co-op game with the same partners.

Drive a total distance of 10 kilometers.

Create a customized weapon.

Kill 50 zombies using a vehicle.