Complete a "Win as Super Brainz" quest.
Complete a "Win as Green Shadow" quest.
Complete a "Destroy 25 Zombies" quest.
Complete a "Destroy 25 Plants" quest.
Complete a "Do 30 Damage as a Zombie Hero" quest.
Complete a "Do 30 Damage as a Plant Hero" quest.
Complete a "Win a multiplayer game" quest.
Complete a "Win 5 multiplayer games" quest.
Complete a "Play 3 Barrels" quest.
Complete a "Do 300 Damage" quest.