Man, I just cannot seem to get this one. I'm not an easy quitter; I got Ambulance L12, Patriot Playground, and A Ride in the Park.
To refresh memory, this is a sniper rampage (head shots only) with location 1 from behind a warehouse fairly high up, and location 2 on top of the garages behind the police station. I've tried everything I can think of and have read about or come up with:
Playing it straight (climb onto the crate and edge and try to get 15 kills). Too hard to get head shots.
Jumping in a car and going off, then down the street and turning right into a walled area. Always get cut up by their fire.
Playing it straight (shoot from above). Not enough targets I can hit.
Jumping down but staying in the enclosure. If there are enough targets, they kill me. If there are not, I can't get 15.
Similar to above, jumping in a car, going up the ramp and down the street to fight it from there. Always get cut down.
Similar, but instead going into the Pharma alcove with an adrenaline pickup. Died in slower motion.
Any new ideas to recommend? I'm not terribly adept with the sniper cross-hairs, but part of the problem is when the targets are moving on slopes or otherwise at angles. It's hard to get the cross-hairs into the predictive spot where the guy will go. Closest I've come to success was a couple times from the walled area, but was never real close.