The criminals were caught off-guard by the sudden attack.
Of the two people below, the one in the lead moved swiftly and shot accurately. He took down each criminal with basically one or two shots.
The policewoman wasn't that good at shooting, but she provided good cover for the first person.
As for the professional gunman who was hiding on the roof and sniping people in the head, he was too much.
He emptied the Glock of seventeen bullets in three seconds, blowing up the heads of seven criminals and hitting eight in their chests.
Then, after he fired the last bullet in the first clip, he unloaded and slipped in another full clip that he was already holding in his left hand. It clicked in place.
A series of gunshots rang out again.
The criminals downstairs weren't rookies, but experienced mercenaries.