Eliminate 4 zombies with one barrel's explosion
Buy 50 upgrades
Crash 50 times
Kill 4 creeping zombies
Kill 3 zombies with one crossbow arrow
Kill 50 zombie dogs
Kill 5 big zombies
Kill 15 explosive zombies
Finish the story in hardcore mode
Finish the First story level
Finish the Second story level
Finish the Third story level
Finish the Fourth story level
Finish the Fifth story level
Finish the Sixth story level
Finish the story
Finish a level in hard mode
Finish a level in hardcore mode
Finish a level without taking damage
Kill a dog zombie
Kill 7 zombies with one grenade
Shoot off 100 zombies' helmets
Kill 10 zombies with shooting weapons in melee
Kill 250 zombies using the 9mm pistol
Kill 25 zombies with revolver during a level
Crush 50 zombies using front saws of the bike
Score 30,000 in Zombies' Coliseum mode
Score 50,000 points in Infinity Sandness mode
Score 50,000 in any story level
Kill 4 zombies with one shotgun shoot
Kill 50 zombies with submachine gun during a level
Put a zombie on a spear
Travel 100 km through hostile lands
Kill 4 vulture zombies
Kill 200 zombies
Kill 2,000 zombies
