Here is the full list of all 29 Hard Rock Zombie Truck achievements.
Blow up 700 zombies
Collect all awards
Crush 700 zombies
Kill evil brain
Kill 6000 zombies
Kill Evil Evil monster
Blow up 400 zombies
Kill Bad Santa
Kill 3000 zombies in the air
Rescue 30 cats
Blow up 200 zombies
Kill 30 cats
Crush 400 zombies
Kill 1500 zombies in the air
Kill 3000 zombies
Rescue 15 cats
Crush 200 zombies
Kill 20 people
Kill 500 zombies in the air
Rescue 10 people
Kill 1000 zombies
Rescue 3 cats
Kill 10 people
Kill BOB
Kill 10 cats
Rescue 6 people
Kill 5 cats
Rescue 3 people
Kill 3 people