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