Here is the full list of all 21 Children of the Sun achievements.
Through their homes
He is blocking the entrance
350 meters are a long way
Some are on the run
Open Gates through their Hearts
Appealing views from the top
Bullets that burn, are Bullets that hurt
When it moves, it spreads
The Virus is in their heads
Gas Tanks make the World burn brighter
Two in One
You can see them all
The Sun shines through
Drifting into their conclusion
Just passing through
Most can burn, but inside they can't
Avoid the Debris
It's been a long time
Consecutive prayers kill
Direct hits hit the hardest
Precise deviation might gets things on fire