Collect all Trophies.
Defeat the first boss in Story mode
Kill 20 or more zombies with one shot while driving the tank.
Kill at least 150 zombies in one combo while driving a bulldozer
Fully upgrade one car in Story mode.
Move to the harbor base in Story mode.
4 Trophies Unlocked
31 Trophies Unlocked
9 Trophies Unlocked
