Here is the full list of all 39 IS Defense achievements.
Survive 20 minutes on the beach
Destroy planes on the desert level
Call artillery support 50 times
Call the air strike support 40 times
KIll 30 000 terrorists
Fire 1000 rockets
Survive 10 minutes on the desert
Destroy 100 pontoons
Finish the game
Finish Saint Tropez level
Get all upgrades
Max the support skill branch
Max the player skill branch
Max the rockets skill branch
Call the helicopter support 30 times
Destroy 1000 vehicles
Finish desert level
Finish harbor level
Destroy 30 landing crafts
Finish beach level
Destroy 250 Hummers
Kill 10 000 terrorists
Call the cargo support 100 times
Destroy 500 vehicles
Call infantry support 100 times
Survive 10 minutes on harbor
Max the machine gun branch
Destroy the Scooby mobile
Destroy 200 vehicles
Deliver 100 headshots
Kill 3 000 terrorists
Destroy the fishing boat on beach level
Survive 10 minutes on the beach
Destroy 100 suiciders before they detonate themselves
Let 100 pontoons land on the shore
Survive 20 minutes on harbor
Survive 20 minutes on the desert
Survive 10 minutes on Saint Tropez
Survive 20 minutes on Saint Tropez