Here is the full list of all 29 American Arcadia achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Discover Number Six secret identity.
Monitor Trevor.
Disobey a direct order.
Get even.
Find a lost couple.
Isn't she a beauty?
Fail a test miserably.
Get a fancy key.
Be back after the break.
Snoop on a colleague's computer.
Take your time getting out of bed.
Complete the game.
Complete Chapter 7
Crash a car. Again
Complete Chapter 6
Complete Chapter 5
Play the piano.
Complete Chapter 4
Worry about someone's physical wellbeing.
Crash a car.
Clean up your house and open the door to an unexpected guest.
Complete Chapter 3
Cross the road without any help.
Complete Chapter 2
Be confused with another person.
Complete Chapter 1
Go on dark ride
Watch a TV show
Complete the Prologue