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.
Scratch in every chapter.
Complete the first Zurk pursuit without being caught.
Complete the game in less than 2 hours.
Browse through all of the TV channels.
Dunk the basketball.
Gather all B-12 memories.
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.
Complete the game and open the city.
Reach Midtown.
Nuzzle up against 5 robots.
Sleep for more than one hour.
Try to play mahjong with the robots.
Die 9 times.
Bring all the music sheets to Morusque.
Meow 100 times.
Jump 500 times.
Wear the paper bag.
Have B-12 translate a robot.
Meet B-12.
Fall inside the city.