Here is the full list of all 21 CHKN achievements.
Kill 10 Creatures with a Slingshot
10 Rocks Broken
Cooked some food
Crafted a tool
3 Creatures Bred
Slept in bed
10 Creatures Created
10 Creatures Killed
10 Creatures Tamed
Increase the Life Shaper's Build Limit
50 Trees Cut Down
Set Something on Fire
Crafted a torch
Used a whistle
Rode a creature
Created a creature
Cut down a tree
Tamed a creature
Fed a creature
You know how to eat.
Broke an egg