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.
Gather all B-12 memories.
Sleep for more than one hour.
Go through Midtown without being detected by the Sentinels.
Scratch the vinyl in the club.
Collect all badges.
Complete the Sewers without killing any Zurks.
Bring all the music sheets to Morusque.
Browse through all of the TV channels.
Dunk the basketball.
Complete the game and open the city.
Die 9 times.
Go to jail.
Reach Midtown.
Try to play mahjong with the robots.
Nuzzle up against 5 robots.
Jump 500 times.
Wear the paper bag.
Have B-12 translate a robot.
Meet B-12.
Meow 100 times.
Fall inside the city.