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.
Pull all the fire alarms
Empty all fire extinguishers
Beat the game in under 30 minutes
Beat the game in under an hour
Make the last move
Find the hidden trophy
Find all secret chess pieces
Complete all constellations
Find all blueprints
An apple for a head
Fail at throwing away trash
Find the nook in Optical
Place a soda can in a recycling bin
Put a soda can in the wrong place instead of recycling
Congratulations on doing something!
Beat the game
Clone an object way too many times
Drink all sodas
Pull enough fire alarms
Break a soda can
Pull one fire alarm
Finish the game with developer commentary enabled
Finish all challenges in Challenge Mode
Play someone else's dream
Upload a dream to the workshop
Contribute an item to the Workshop
Import a 3D model into the game