@marapriyemova he actually stopped because he knew he can't hold up at higher floors... and he is planning on returning there to kill the 3rd boss and get the medicine for his mother !!
i was thinking about dropping since he was supposed to risk his life to pay medicine for his mom, then never mention her nor visit her through the whole story... but at that point he returned to his main objective (his mom) so i'm still around
not gonna discuss why you didn't like the chapter because everyone has his preferences, and some of your arguments can be true (this is absolutely NOT a perfect story !!), feel free to do whatever you please !! not gonna sue you