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

Loot 5 Exceptional Weapons.

Find 120 collectibles.

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

Kill a Butcher using an axe.

Finish 75 quests cumulatively.

Kill 250 zombies with modified weapons.

Kill 250 zombies using blunt melee weapons.

Set 10 zombies on fire simultaneously.

Complete act I.

Create weapons to rival the gods of fire or thunder.

Create a customized weapon.