Destroy 100 blast roots

Defeat the Widowmaker in Times Square without killing a single Hybrid

Use the Deadeye to kill 20 snipers

Complete the assassination side missions.

Upgrade 5 weapons in Campaign Mode

Get a kill with every weapon in your arsenal

Kill 5 drivers without destroying their vehicle

Kill 250 zombies using blunt melee weapons.

Complete 5 quests with 3 co-op partners.

Create weapons to rival the gods of fire or thunder.

Join another player's game.

Travel a distance of 20 kilometers on foot.