Viewed all of Tomizawa's Drink Links.

Complete 10 non-Story Quests.

Fully upgrade a Superior weapon and customize it with a mod or perk in every slot.

Encounter a mysterious... benefactor? Well, that's what she'd call herself, anyway.

Track down Michael and rescue him from the Terror at Monarch Studios.

Slay 100 Zombies using Caustic, Fire, or Shock damage.

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

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

Jinx with another player

Performed a Tetris Line Clear 200 times in completed matches

Win all rounds

Win the final round with a tank top

Completed the main story within Adventure mode and watched the ending