The tutorial tower of the advanced 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.nl fastest updating comic site. The Summary is

After being trapped for 12 years in a tower full of regenerating monsters, Hyeonu Kim is more powerful than just about any human or monster on Earth. Now that he’s free, he’s determined to find out who was behind his imprisonment, even if that means he has to kill hordes of monsters -- and inadvertently save the world -- along the way.