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