This is a storyline achievement which can be achieved in Mombasa Streets. However, if, like me, you decided to just use level select to choose what missions to play, then you can miss this achievement.
To get this achievement, load up Mombasa Streets with Rally Point 5 (Sniper Rifle), and follow VISR directions to get to the Bent Sniper Rifle, and then pick it up by holding
. This will award you this achievement.
If you get lost or go into a dead end, you can get helpful directions from your VISR by pressing either
or
to get an 'emoticon' target locator to appear.
In the area where your distance is 0.0m, you'll see the sniper rifle hanging from an electrical cable in the air. Go under it, jump and hold
whilst in the air to grab it.