Here is the full list of all 32 Beyond a Steel Sky achievements.
Obtain a waiver from Orana
Clean everything up, ready for the party
Liberate Joey from the Museum of New History
Set the Kids' Exhibit to speak 'Aggressively'
Knock Chipworth over
Complete the Alonso interview
Examine all of Graham's conspiracy posters
Turn the sprinklers on
Enter the main gates
Feed Voxel a stolen sandwich
Complete all tutorials
Complete the game
Complete the game without using any hints
Learn the full story of Joey the Saviour
Porpoisefully fail Jimmy's scary moment
Watch a full poetry recital
Unlock Foster's classic coat
Witness both Songbird's endings
Transfer all the holo-trinkets to your brooch
Discover all five movie posters
Neutralise Jimmy
Enter the secret room behind the fire
Complete LINCspace
Read the secret message
Earn a party invite
Got caught spying
Free Foster
Orana can free the children
Set everyone's Qdos level to infinity
Open the main gates to allow Wendell to leave with the kids
Confront the Council in the Citadel
Destroy everything that Joey created