500 barrels exploded
All upgrades on all cars bought
All levels completed
Fuel tank upgrades bought
Steel Pass claimed on 3 cars
Stage 6 finished
Stage 4 finished
5 packs bought in SHOP
Earned over 100 gems
Collected reward for completing 10 quests
Earned over 100 000 coins
2000 zombies killed
All turbo burned at once
All hidden chests collected