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