Titanfall's Expedition pack has been out since May, but that's no reason not to try and get better at the maps, especially Runoff.
In the video below, Cookie (the man formerly known as Dave Cook), takes you through the map, and giving you pointers along the way.
He also provides his two-cents on the map. Consider it a mini-review.
The other maps in the Expedition pack are called Swampland and War Zone.