Pick Me Up!

Follows Han Seo-jin, a top-ranking player of a popular gacha/tower-clearing game with the same name as the novel. One way or another, our protagonist finds himself transported into the game as a 1-star Hero, the lowest level of Hero, in the account of a brand-new player. Now he must use his knowledge and mastery of the game to survive and, hopefully, return to his own world. Source: Meteor Strike