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