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