Go for the single goon (Batman - Office)
From Create Your Own Story
Location: Wayne Enterprises
Batman sneaked towards the single goon. He saw him, standing in front of the exit. Batman grabbed one of the pencils, and threw it behind the thug. The thug was distracted from the pencil, and looked away. By then, Batman already sneaked behind him and took him down by choking him unconscious. However, the thug managed to shout:
"He's here!"
Batman quickly knocked him down unconscious, but the two thugs stood right in front of him, pointing their rifles towards Batman.
"We got ya now, Bat!"
Next move?