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