Kill a Suicider with a grenade.

Kill 50 human enemies.

Finish 75 quests cumulatively.

Save 5 people besieged by zombies.

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

Create weapons to rival the gods of fire or thunder.

Complete 5 quests with 3 co-op partners.

Join another player's game.

Kill 250 zombies using edged melee weapons.

Sever 100 limbs.

Reach level 10.

Create a customized weapon.

Survive 30 years in SURVIVAL.