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