This was just too much, too fast. He could barely tell who was who and Bruce definitely couldn't tell who was the good guys in this situation. But he did know one thing, everyone here was out to get him.
He ducks at the gun fire and backs up two more steps, trying to make sense of what Sage was yelling at him. His heart rate was already going up, even if he couldn't hear the beeping over the noise. He yells back, "All of you, just stay away from me!!"
He turns and runs the opposite way down the alley, grabbing the ladder of a fire escape to pull himself up. The other end of the alley was probably blocked off at this point so he was going to try for the roof of the next building over.