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