How To Unlock:
Kill a total of 30 enemies with Browning gun.
For this trophy you have to get a total of 30 kills with the Browning gun. The Browning gun is a mounted turret that is found in a few of the chapters. You should be able to unlock the trophy by the end of your first playthrough. If you haven't unlocked it by then, I'd recommend you to replay Mission 7 - A Simple Rendezvous. There is a section where you have to hold a position until the chopper arrives. Note: kills using the machine gun mounted on the jeep during the on rails section also counts.