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