Here is the full list of all 21 Autobahn Police Simulator 2 achievements.
Buy all upgrades in GARAGE
Buy all upgrades
Buy all upgrades in STATION
Buy all upgrades in TRAINING
Find all 20 rubber duckies
Unlock and finish Konrad's mission
Arrest the mastermind behind the smuggler ring
Finish the campaign
Interrupt the big drug deal and catch the dealers
Find and arrest the stone thrower
Gain 50,000 Influence Points
Complete 5 car chases successfully
Finish a traffic control 100% completely
Arrest the truck driver
Show mercy with the truck driver and let him go
Discover all 10 memorials in the world
Enjoy a donut in all 5 donut shops
Unlock all Fast Travel Stations in the world
Finish an accident 100% completely
Join the autobahn police
Drive at least for 10 seconds 200 kph or more