Hardcore Leveling Warrior 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.nl fastest updating comic site. The Summary is

When you go from level 99 to level 1 and start all over again.
“Those who clear quests, shall receive everything.” An RPG adventure with HCLW and his allies, set in a lucid reality.