Purchase all abilities for all character classes.

Purchase 5 weapons.

13 Parasite Zombies killed (lifetime)

Achieve a 5 kill streak in a Versus match.

Attempt "The Rescue" and survive.

Kill an enemy with each weapon type including special weapons.

Kill 100 zombies with CQC (lifetime)

Infected 13 times (lifetime)

Complete the sixth mission of the U.S.S. campaign.

Kill 5 enemies with Blood Frenzy in a single campaign game or multiplayer match.

Purchase all abilities for one character class.

Purchase an ability.