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