Trophy Description:Use the Swarm's multi-target lock-on firing mode to kill 3 UAV drones with one volley.

Can easily be done in Chapter 10. After defeating the Reactive Armor enemy with the an experimental area with flying drones. Grab the Swarm Missile launcher off the gun rack right after the checkpoint or use the one you previously picked up from the reactive armor enemy. Breach and disable the shields of each of the 3 flying drones with L2 before locking onto them by pressing L1, then fire away when you have a clear shot.