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