Here is the full list of all 12 AR-K achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Buy 10 cans of Skunk
Perform a speed run
Complete the second chapter
Behave, Citizen!
Unlock every terminal code
Complete the first chapter
Keep talking! Be sociable!
Put on the seductive dress
Combine 100 objects incorrectly
Tell at least 3 jokes
Find the retro video
Read tons of descriptions