The best moment to start this mission is right after the previous one, i.e. after you have dealt the situation with Hank that you have found near the harbor. Go to the South-West, towards the destroyed bridge in the Market District (note - if you have not recaptured this district from D.U.P. forces, there may be an enemy base here!). It is a good idea to take the highway, to get there, and eliminate the enemy soldiers that you encounter (you can also walk around them).
The easiest way to make it over from the Southern Seattle assumes using Video Surge (the circle) from the Video category. Sufficiently early, stand by a satellite dish, thanks to which you will be catapulted after you press the button. You can now reach the rooftop of the building in the Uptown district, where there is a generator that powers the electric fence of the D.U.P. main skyscraper You will have to choose your last mission:
- If you play as the hero and you strive for good karma select mission 17a - Expose Augustine
- If you play as the villain and you strive for Bad Karma select mission 17b - Kill Augustine