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