The only good news is that unlike the last challenge when he had to pay attention to his footing and balance, he only had to muffle the sound of his feet on the ground. Even with the increased difficulty of higher speed, he was able to complete the challenge in a week.
The challenge continued with the same enemy but this time a strong wind was added to it, to increase the difficulty. This wind was much stronger than the one he faced previously and he had to run in the opposite direction of the strong wind. The effect of effect the wind was stronger than simply throwing him off balance, this time the wind will try to pull him backward and negate his forward momentum.