Kill 250 zombies with modified weapons.

Play with 10 different co-op partners for at least 15 minutes each.

Complete 25 quests while playing with at least one co-op partner.

Play in a co-op team of 4 different playable characters.

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

Complete 100% of the Time Trials

Complete all objectives in the Plover Island Complex

Reach level 40

Acquire 100% of the Atomic Evolution set

Kill the Electric Great White

Reach the Plover Island Complex

Reach 100% objective completion in all regions