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 13.
Fulfill the prophecy.
Inform yourself well.
Drain the swamp.
Complete April 14.
Complete April 15.
Retrieve with care.
Trust, but verify.
Draw a full triangle.
Corner someone.
Make someone go to the wrong place.
Find what is hidden from sight.
Prevent a provocation.
Dispense deliverance.
Turn one on the other.
Frame someone.
Cause a stir.
Decrease their numbers.
Connect two loose ends.