Here is the full list of all 20 Tiny Troopers 2: Special Ops (Windows) achievements worth 200 gamerscore.
You have lost 5 troopers to mines.
You have ordered 50 packages from HQ.
You have had at least 3,000,000 Command Points.
Killed 200 plague chickens.
You have collected 1,000 Dog Tags.
You have killed 50 enemies with airstrikes.
You have destroyed 30 tanks.
You have killed 2,000 enemies.
Your machine gunner has killed 50 enemies.
You have completed Operation 3.
You have used 5 different uniforms in battle.
You have used an airstrike to kill 3 enemies.
You have upgraded one upgrade category to the maximum.
You have used each heavy weapon in one mission.
Got a full squad in the last zombie map.
You have completed Operation 2.
You have completed Operation 1.
You have failed the first mission.
Unlocked the first gated area.
You have completed the tutorial.