It’s a good idea to have a glance at your opponent's portion of the screen, for it'll let you know what he's up to. But keep in mind you’re on a timer.
Attacking your opponent with booby traps will buy you time. Do it whenever possible! But remember where you've set your traps they can kill you as well.
If you leave the Embassy without all of the necessary items, an agent will knock you backwards. Make sure you have everything, and make sure it’s in the briefcase!