Here is the full list of all 14 Airborne achievements.
The base game contains 12 achievements, and there is 1 DLC pack containing 2 achievements.
Open the game for the first time.
Die 10 times.
Die 100 times.
Die 1,000 times.
Die 10,000 times.
Open the Level Editor for the first time.
Publish your first online level.
Complete the game.
Complete Level 50 in 1 attempt.
Complete the boss fight in 1 attempt.
Play 100 workshop levels.
Find the secret level.
Upload your first level pack
Find the secret easter egg