Whoosh!
Brian had distanced himself with the gap on the floor. At the same time as he fell backwards, he saw the monster's claws had touched his former position. The walls were already corroded so after the attack few bricks fell down. The monster growled a few times, turned its head and disappeared from the gap. Most probably it was going to search for a place from where it could come over to get Brian.
Brian was relieved. With a fast move his hand reached the quiver and he took out another arrow. This one was twice as thick as the other arrows. There was a rope knotted on its back. He wiggled his head and aimed at the side of the another four-storey building. He pulled the bow string and released it.
Arrow shot down from the top of the building and pierced the solar water heater which was on top of the four-storey building. Brian tied the rope over a concrete and went downwards. As his body was falling, the rope immediately tightened.