Lose the maximum level of Chase.

Modify your weapon for the first time.

Join a co-op session.

Enter the Bazaar.

Craft your first item.

Use an Inhibitor for the first time.

Perform 25 perfect defensive moves.

Fight through the Halperin Hotel to make contact with the authorities.

Kill 666 Snakes or Spiders.

Survive a plane crash, get bitten, and create your first Zombie-Free Zone.

Customize your Helldiver with new cape, armor, and helmet.

At maximum notoriety, become anonymous by tearing down wanted posters