Here is the full list of all 24 Flying Soldiers achievements.
Save the first soldier.
Get two silver awards.
Get three gold awards.
Save a total of 20 soldiers.
Collect a total of 15 medals.
Place a total of 50 objects.
Complete all the missions from Campaign 1.
Save the first commando soldier.
Get 10 silver awards.
Get 20 gold awards.
Save a total of 50 soldiers.
Collect a total of 40 medals.
Place a total of 100 objects.
Complete all the missions from Campaign 2.
Save the first special forces soldier.
Collect a total of 80 medals.
Get 30 silver awards.
Get 35 gold awards.
Complete all the missions from Campaign 3.
Get 45 silver awards.
Save a total of 120 soldiers.
Place a total of 220 objects.
Collect a total of 130 medals.
Get 45 gold awards.