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.
Score 600 or higher in a certain challenge.
You have learned the ways of the SNéK.
Why did you do that?
Solved all pages of the Great Book.
Find all audio recordings.
Ahh! Scary noise! No!
Healed and ready to execute some puzzles.
Solve the wire puzzle.