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