NEW YORK - Alexandra Broseus grabs a shotgun, lifts it to her slender shoulder, pumps, and readies her aim. Seconds later, she's firing furiously, gunning down the animated deer darting across the screen of this video game inside a popular, hipster bar in Manhattan called Horseshoe. When the shooting ends and the adrenaline wanes, Broseus — wearing a zebra-striped dress _ brings the plastic barrel to her lips and blows the imaginary smoke into the air.