Return To Player is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

One day the world became a game. Monsters are suddenly appearing and killing humans and humans have become players and must fulfill quests! A player that was given a second chance after the fall of mankind, Kim Sehan. Will he be able to beat the system that made the world into a mess?