Here is the full list of all 10 The Looker achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Solve a puzzle in real life.
Complete the environmental puzzle.
Why did you do that?
Find all audio recordings.
Score 600 or higher in a certain challenge.
Solved all pages of the Great Book.
Solve the wire puzzle.
You have learned the ways of the SNéK.
Ahh! Scary noise! No!
Healed and ready to execute some puzzles.