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