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