Grunge

In this world, power, true power, rules everything.
To gain this power, Devin can go to any lengths, he could hurt anyone, kill anyone. He will reap the souls of both Humans and Monsters alike.
When given the chance to rise up, the weakest human alive took it. This is the story of one fine young lad named Devin Specter. His start on the journey to become a true God.

After portals which led to dungeons filled with monsters, dunes with fatal traps, towers with dangerous mobs and the dark abyss appeared on earth, everything changed. Humans with superpowers appeared, led by humans who already had supernatural abilities, humanity fought these challenges.
As more and more time passed, the stronger became even stronger and the weaker became even weaker.

After being trampled on multiple times, Devin finally faced the harsh reality and took control of his life.

***

Author's note: Story contains harsh elements, and the MC has twisted and a sick way of looking at things, he is not like your normal "JUSTIFIED" MC, he is not a goody-two-shoes, an upholder of justice, but instead he is evil and ruthless to the core, and will do anything to gain power. The story has minor romance plot and will be limited to only one girl, there will be a shadow harem, that means a new girl every arc but will not have an intimate or romantic relationship with the MC. It can get dark, and gory, you have been warned.

Please do let me know, if you find any grammatical errors or any better word to fix things up.