Here is the full list of all 14 Airport Simulator 2019 achievements worth 1,000 gamerscore.
Complete your first day on the job.
Reach player level 5.
Reach player level 10.
Complete a full day (without buying or skipping any tasks) by assigning hired workers to vehicles.
Complete a full day (without buying or skipping any tasks) where you perform all tasks yourself.
Drive every vehicle in the game yourself to complete an assigned task.
Complete a task with a worker who you explicitly hired.
Complete a task with a rented vehicle.
Complete a task with a vehicle you bought.
Successfully complete a day where you manage the maximum number of flights.
Earn enough so that your total money is 200,000.
Earn enough so that your total money is 500,000.
Fully upgrade an employee's skills.
Fully upgrade a vehicle.