Here is the full list of all 19 Airport Simulator 3: Day & Night achievements.
Complete your first day on the job.
Reach player level 5.
Reach player level 10.
Complete a full day (without buying off or skipping any tasks) by assigning hired workers to vehicles.
Complete a full day (without buying off or skipping any tasks) where you perform all tasks yourself without assigning any workers.
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.
Park a vehicle in one of the new garage.
Fulfil a task of deicing on the airport.
Fulfil a task of cleaning a plane.
Get an additional gate for bigger planes.
Read all interactive help messages on the airport.