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.
Complete the first chapter
Complete the second chapter
Perform a speed run
Unlock every terminal code
Behave, Citizen!
Combine 100 objects incorrectly
Tell at least 3 jokes
Buy 10 cans of Skunk
Keep talking! Be sociable!
Put on the seductive dress
Find the retro video
Read tons of descriptions