Here is the full list of all 18 Garbage Truck Simulator achievements.
Used the 2R compactor
Used the Vulture compactor
Used the Shark compactor
Completed a street bulk waste collection
Completed a street residential waste collection
Completed a street cardboard collection
Completed the doctor's office clearing
Completed the bar clearing
Completed the house clearing
Compacted by accident
Super clean
Conga down
See you later, boy
The last party
Milk and sugar
4 Minutes, 700 Watts
Driver
Shotgun