Finish stage 4
Halfway there
100Finish stage 6
Survivalist
150Complete all levels
Roadkill
50Kill 2000 zombies
Blow up 500 barrels
Earn 100 000 coins
Luxury
50Earn 100 gems
Collect reward for completing 10 quests
Car of Steel
50Claim Steel Pass on 3 cars
Never stop
50Buy both fuel tank upgrades
Collect all hidden chests
Unstoppable
200Buy all upgrades on all cars
All turbo burned at once
5 packs bought in SHOP