Kill 100 zombies to get this achievement.
Kill 500 zombies to get this achievement.
Complete the full story mode to get this achievement!
Killed first Zombie!
Complete the full race mode to get this achievement!
Complete Level 1 to unlock this achievement.
Complete Level 2 to unlock this achievement.
Complete Level 4 to unlock this achievement.
Complete Level 3 to unlock this achievement.
Complete Level 5 to unlock this achievement.
Complete Level 6 to unlock this achievement.
Complete Level 8 to unlock this achievement.
Complete Level 7 to unlock this achievement.