Here is the full list of all 15 Aerial Destruction achievements.
Destroy the enemy base in mission "Frontline Assault".
Complete all missions of the game.
Have the helicopter shot down 10 times.
Fire a total of 2000 rockets.
Protect the camp for few minutes in mission "Camp Defence".
Succesfully protect both temples in the "Ancient Ruins" mission.
Destroy the enemy troops and positions in the "Volcanic Island" mission.
Successfully support the allied retreating troops in mission "Convoy Support".
Destroy 500 armed pickups.
Destroy 300 tanks.
Destroy 100 buildings and fortifications.
Kill 1000 mutants.
Buy 5 upgrades for the helicopters.
Blast the bridge in mission "Bridge Destruction".
Defend the outpost in mision "Outpost Invasion".