Here is the full list of all 25 SCARF achievements.
You have played both endings
You have defeated the Mother. Freedom rained over your kin
The pyramid is open.
You have mastered the Ocean by discovering all its secrets
You have discovered all the hidden toys!
You have mastered the Forest by discovering all its secrets
All the inks have been found.
You have mastered the Desert by discovering all its secrets
You can now open the pyramid
You have interacted with the scarf so much! Now you are friends
You have been used by Mother. The end of your adventure is here
You can now go home
You have completed the Forest
You have found all the hidden drawings!
Play with the wooden horse seesaw
Goal!!
Play a game of bowling
You have completed the Desert
Unlock the glider ability
You have completed the Ocean
Unlock the slingshot ability
Bonding with the scarf.
Unlock the liana ability
Unlock the double jump ability
Start the adventure by helping the scarf