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