Here is the full list of all 20 Ruya achievements.
Look for home
Solved all puzzles in world eight
Solve every puzzle in the game
Look for love
Solved all puzzles in world seven
Look for truth
Solved all puzzles in world six
Look patiently
Solved all puzzles in world five
Look up
Solved all puzzles in world four
Solved all puzzles in world three
Look around
Solved all puzzles in world two
Look within
Look carefully
Picked a mushroom
Solved all puzzles in world one
They're musical
She's shy