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