Here is the full list of all 15 Air Brawl achievements.
Get 100 Kills
Crash 100 Times
Win your first game
Get your first kill
Crash for the first time!
Win 10 games
Win 100 games
Win 1000 Games
Win 10000 Games
Get 1000 Kills
Crash 1000 Times
Complete the tutorial
Get killed by one of the developers
Kill one of the developers
Capture your first flag