How to Live as a Villain is a Manga/Manhwa/Manhua in (English/Raw) language, Action series, english chapters have been translated and you can read them here.
The Summary is
“You have been chosen as a player in the great game to select the next god’s successor, the Mission! Congratulations!”
Seonghoon has suddenly fallen into another world to participate in a game to become a god. This other world that is akin to that of a game contains players who cooperate and also kill each other in cold blood…!!
Seonghoon, a person without an ounce of talent, uses wicked and crude tricks to become an all-powerful player!