To obtain this achievement you need to play on the third mission of the campaign, 'Traffic'
Once you're in the street where there are cars passing down roads horizontally. An enemy car will pull up in the middle of the 2 streets. Wait until you have a chance to dash across the street as fast as possible, and shoot the enemies when they are behind cover, because you will be beside them. After that, do the same to the next street, just be more careful here because is shot through someone and hit a car, but it isn't that hard.
Hope this guide helped! Remember that you should sprint, double jump, then dash forwards when going across the street.