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