If Your People Ask You Something, Like "We Need To Heat Homes!" For Example -
Telling Them - "Ill Heat Half (Or All) Of Your Homes" -
Means You Must Do What You Said Before The Time Limit Expires.
If You Tell Them "I Won't Address This Right Now" -
You Are Safe. You Take A Small Amount Of Discontent, But You Do Not Make A Promise.
(So You Can't Break It)
Completing All Promised Things In A Playthrough, And Reaching An Ending, Will Net You This Achievement.
Playing On Easy Does Not Void The Achievement.
Good Luck!