Here is the full list of all 31 RiME achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Complete the labyrinth without making a sound.
Don't smash the eggs.
The higher, the funnier!
Reunite the family.
Move undetected amongst the shades.
Reunite with the white shade.
Collect all the outfits.
Reassemble all the emblems.
Be faster than the Sentinels.
Try to undo a mistake.
Collect all the toys.
Throw something as far as you can.
Complete the lost lullaby.
Find the shark.
Respect the past.
Use only one bubble in the underwater cave.
Turning your back to the truth and persevering will lead you nowhere.
The other way was safer.
Peek through all the keyholes.
Accept things as they are.
Hit your lowest point.
Witness the resting place of the once mighty.
Pay it forward.
Break the five strange statues.
From victim to victor.
Break lots of jars.
Lit many lights.
Leave your comfort zone.
Bring light to the labyrinth of darkness.
Find a nice resting place.
Try to wake up the lost Sentinel.