What, the World I Speedrun in Is Hell Level?

The pollution of the old gods covers the sky, and the demons in the abyss wreak havoc on the earth... This is a world full of monsters, evil spirits are everywhere, and strange things are rampant. Humanity has been reduced to the bottom of the food chain! Faced with such a bad living environment, Zhao Zheng, who came from time travel, conscientiously chose to live in ruins, planning to live as long as he could. Until he discovered that he actually had an abstract plug-in, and he could become stronger by going crazy? So, Zhao Zheng decided to change his way of life... "Look, what I'm going to perform next is: speed through hell without any damage!"