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