Here is the full list of all 24 Stray achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Complete the game in less than 2 hours.
Scratch in every chapter.
Complete the first Zurk pursuit without being caught.
Collect all badges.
Complete the game and open the city.
Gather all B-12 memories.
Go to jail.
Scratch the vinyl in the club.
Go through Midtown without being detected by the Sentinels.
Reach Midtown.
Try to play mahjong with the robots.
Complete the Sewers without killing any Zurks.
Die 9 times.
Sleep for more than one hour.
Bring all the music sheets to Morusque.
Nuzzle up against 5 robots.
Browse through all of the TV channels.
Dunk the basketball.
Jump 500 times.
Meow 100 times.
Wear the paper bag.
Have B-12 translate a robot.
Meet B-12.
Fall inside the city.