You need to jump from the 3 Count Casino to the Nuclear Plant without touching the ground. So you can do this one of two ways.
Level up your character enough where you can actually jump building to building (wall runs are welcome just no touching the ground)
Or you can get this much earlier by jumping and calling a Vehicle (The Void for example). This worked in the Xbox 360 version and I'm not really surprised that it still does in the One version lol.
The video will show you both ways on earning the achievement. Sorry for the cut in the video but I started strong in the first take and ended strong in the 2nd take lol. My path was completed in one go however but as I say in the video my character isn't really that leveled so if you choose to wait to earn this later on in the game you won't struggle as much as I did in the video. If you can't wait however the path I took should work.