Glancing at the zombies in front, Hugo swung his sword with force cutting off the head of one of the zombies. Then he shouted at the top of his voice,
"Arghhhhhh".
He increased the speed at which he was slashing zombies. As the zombies' lifeless bodies were falling to the ground, he began moving forward as he was now closer to the tree. The zombies were too much that he had to move back a little, but now that he was closer to the tree, it's time to implement what he had in mind.
Ryder and Evelyn were still trying their very best to glimpse at him when he suddenly mounted the tree reaching its branch. Now, this was how he achieved it. After giving a zombie a deep slash in the chest, with two steps, he was able to get to the lower branch of the tree...not the top one.