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