Here is the full list of all 19 Orwell: Ignorance is Strength achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Complete April 15.
Retrieve with care.
Draw a full triangle.
Corner someone.
Find what is hidden from sight.
Dispense deliverance.
Turn one on the other.
Frame someone.
Cause a stir.
Decrease their numbers.
Connect two loose ends.
Complete April 14.
Prevent a provocation.
Make someone go to the wrong place.
Complete April 13.
Fulfill the prophecy.
Inform yourself well.
Trust, but verify.
Drain the swamp.