大陸を下僕にした。

Attempt "The Rescue" and survive.

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

Heal with 101 Green Herbs (lifetime)

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

吹き飛ばしを行った。

バトルで下僕転生に成功した。

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

Infected 13 times (lifetime)

Kill an infected teammate with a headshot before they become a zombie in any mode.

Purchase all abilities for one character class.

Purchase an ability.