Is it wrong to level up in Dungeons!?

Viktor Gromov is a man of great talents and even greater merits. But, in addition to his complex personality, there are reasons to believe that in a past life he ate Lakshmi's children for breakfast, drank Tyuhe's blood for lunch, and cheated on Fortune instead of eating dinner. There is no other way to explain how he could be so unlucky. Being the weakest adventurer, he managed to withstand the blows of fate for seven years, while saving the world a couple of times. And then he got a system that allows him to become infinitely stronger, and his life has now become a semblance of a game.