One of the achievements you can get in Battlefield 3 is called 'Army of Darkness', and it doesn't feature Ash from the Evil Dead series. Obviously this is a wasted opportunity, as any game that could have Ash in it, should have Ash in it. But I digress.
To get the 'Army of Darkness' achievement, you need to shoot out the four lights during the opening of the level "Midnight Shift". It seems pretty simple, but they don't call them achievements for doing nothing special. It's a tough shot, thanks to the game's sniping physics being so weird.