Originally Posted by iBuzz7S
Excluding the collectible stuff (Templar and Flag bullshit) I completed all other tasks before assassinating anyone. That's how I got my achievement.
Pretty sure that's how it is supposed to be done.
I had gotten all the viewpoints, saved citizens and spied on the people I needed to get the information about the assassination and as I went to leave the city which I did I got the message it would reset the progress so I have to do the spying again to get to the assassination part again, leads me to believe it will be fine but I'm in a world of confusion.