Full list of all 20 Tiny Troopers achievements worth 200 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Windows Phone.
Use one of each heavy weapon on a single mission
Kill 50 Enemies with Rockets
Order 10 items from HQ
Loose 5 Troopers to Mines
Kill 50 Enemies with Grenades
Use an Airstrike to Kill 3 Enemies At Once
Destroy 10 Towers
Kill 100 Enemies
Collect 25 Dog Tags
Loose the first mission
Complete the Tutorial
Fully Upgrade You Squad
Kill 50 Enemies with an Airstike
Destroy 10 Tanks
Earn 200,000 Command Points
Kill 50 Enemies with Machine Gunner
Kill 50 Enemies with Delta Force
Complete Chapter 1
Complete Chapter 2
Complete Chapter 3