Robbers in the House

A gang of extremely dangerous and daring robbers have long held fear of wealthy citizens, they plundered the houses, cleaned several banks. They act quickly, brazenly, killing guards and unnecessary witnesses. Their long could not catch, but suddenly there was information that the robbers are going to climb the central museum and steal a valuable artifact - a royal crown, adorned with a ruby ??large scale. The building was surrounded by bandits and offered to surrender, but they flatly refused. Start operation Robbers in the House. Since the hostages from the bandits did not have, were closed all entrances and exits, and you, as a sniper, ordered to destroy the robbers. Through the wall, even in the optical sight, you even score will not see anything, so you have to wait until the figures in black masks appear on the background of lit windows. They are trying to find a way out and will look out of the window.