Here is the full list of all 40 ToriDori achievements.
You found all the differences.
Complete the game.
Done!
You found 300 differences.
Pet the cat in the captain's cabin.
Take a walk around captain's cabin.
Complete the first diorama of four pieces.
You found 200 differences.
You found 100 differences.
You have used 10 clue
Complete the first diorama of two pieces.
You found 50 differences.
You have used 5 clue
You have used 1 clue
Make more than 100 wrong clicks.
You found 10 differences.
Click past differences 10 times.
Complete the first diorama of one piece.
Go through one location without hints.
Take the training.
Find one difference.