Here is the full list of all 17 GRIS achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Avoid the storm
Sing to the magic fowls
Third stage
Feed the forest friend
Break the stone piles
Second stage
Fourth stage
Finish the game
Fifth stage
Memories from the past
Find all mementos
Avoid eel bites
A color has been brought back
First stage