Here is the full list of all 21 Children of the Sun achievements.
Through their homes
350 meters are a long way
He is blocking the entrance
Some are on the run
Gas Tanks make the World burn brighter
When it moves, it spreads
The Virus is in their heads
Bullets that burn, are Bullets that hurt
Appealing views from the top
Open Gates through their Hearts
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