Yeah, he flung the zombie away, but he knew that wasn't the end. The tier 3 zombie was surely gonna stand up and attack him again. He was still shooting the zombies in front and taking a peek at the tier 3 zombie to see when it had fully gotten up from the ground...it wasn't easy.
It got up from the ground and began running toward him again. While still shooting the zombies in front, Hugo drew out his sword from his scabbard once again. And he did what he did minutes ago, he switched. He migrated the pistol to his left hand once again, and the sword to his right.
At this point, he wasn't standing straight anymore, he wasn't facing the zombies coming in front anymore. He stood in a way that he could see the zombies coming in front and the tier 3 zombie darting toward him. His pistol was in his left hand, so 'cause of the way he stood, he was shooting the zombies in front and glancing at the tier 3 zombie running towards him.