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