Here is the full list of all 23 Angel Flare achievements.
Finish All Rob's Missions with Gold Medals
Finish All Hina's Missions with Gold Medals
Finish All Sil's Missions with Gold Medals
Finish All Eva's Missions with Gold Medals
Finish All Hayde's Missions with Gold Medals
Finish All Andrea's Missions with Gold Medals
Finish All Story Missions
Finish All Story Missions With Silver Medals
Finish All Story Missions With Gold Medals
Unlock 5 Planes of Any Quality
Unlock 10 Planes of Any Quality
Unlock All Planes
Unlock All Weapons, Upgrades, Wingman Upgrades and Planes.
Max all pilots levels
Unlock all Bullet Weapons
Unlock all Missile Weapons
Unlock all Energy Weapons
Unlock all Weapons
Earn All Gold Medals, Plane Upgrades, and Max Every Plane and Pilot's Level
Destroy a total of 1000 Enemies
Destroy a total of 5000 Enemies
Destroy a total of 10000 Enemies