Full list of all 27 Superliminal achievements. It takes around 8-10 hours to unlock all of the achievements in the base game on Windows.
The base game contains 21 achievements, and there is 1 DLC pack containing 6 achievements.
Find the hidden trophy
Complete all constellations
Make the last move
Find all secret chess pieces
Find all blueprints
Empty all fire extinguishers
An apple for a head
Clone an object way too many times
Fail at throwing away trash
Break a soda can
Congratulations on doing something!
Beat the game in under an hour
Find the nook in Optical
Drink all sodas
Beat the game
Pull enough fire alarms
Place a soda can in a recycling bin
Put a soda can in the wrong place instead of recycling
Pull one fire alarm
Pull all the fire alarms
Beat the game in under 30 minutes
Finish the game with developer commentary enabled
Play someone else's dream
Contribute an item to the Workshop
Import a 3D model into the game
Upload a dream to the workshop
Finish all challenges in Challenge Mode