Edit: Removed a good chunk of the score screen from the video (it was almost 1 min long wtf).

Maybe there's a faster way to complete this mission with NO TRACES. The thing is that you can't get too close with D-Walker without the guard spotting you. If you run the guard gets a alert. And, of course, the holdup. If the guard decides that he's going to fuck with your day, just reset.

Time is based of IGT.