This wasn't the first time to face such a deadly and threatening situation. So he didn't even freak out nor panic as he calmly planned for his next moves.
To his surprise, the leader's intervention came to help him greatly. He didn't only buy him little time by chatting with Tomason from before, but also gave lots of instructions to his team, preventing them from acting on impulse or on their instincts and experience.
So as that leader started to talk, William calmly moved towards one direction, took out his bow and a few arrows, before unhesitatingly releasing a few bolts of his explosive arrows.
The arrows landed fast and exploded, making it impossible for anyone to stand idle anymore. Even the leader got to stop what he was saying, while watching ten arrows hitting ten different places at the same time, unleashing large balls of fire.