Here is the full list of all 21 Warhammer 40,000: Dakka Squadron - there are Flyboyz Edition achievements.
Destroy 5 enemy targets with any Defensive Turret Weapon.
Destroy 20 enemy Planes with any Blitza-Bommer plane
Destroy 5 ground targets using any Gun Weapon with any Blitza-Bommer plane
Destroy 50 enemy Planes with any Rokkit Weapon
Destroy 10 enemy planes while Boosting
Destroy 20 enemy Turrets.
Destroy 20 enemy Ground Targets with any Dakkajet plane
Complete the tutorial
Destroy 75 enemy Dakkajets.
Perform 100 Snap Turns
Perform 200 Snap Turns
Perform 200 Maneuvers
Destroy 30 enemy Planes with any Burna-Bommer plane
Destroy 10 enemy Planes with any Defensive Beam Weapon Weapon.
Destroy 100 ground targets with the Burna Bomb Weapon
Destroy 35 Arvus Lighters with any Rokkit Weapon
Destroy 10 enemy Planes with any Beam weapon
Kill 20 enemy Planes with any Burna-Bommer plane.
Destroy 1 enemy plane with any Bomm Weapon.
Destroy 20 enemy ground targets with any Beam Weapon
Destroy 100 total targets in Fire and Ferget mode