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