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