Reading a lot of books has a drawback: one may come across one which is not quite on par with the rest, i.e. worse than average. Unfortunately, this series happens to be one of my worst reads.
I really feel that the author needs a lot more writing experience, which partly comes from reading a lot, as well as attending writing classes. This shows in the quality of the book. The most striking sign of inexperience is that the author has a lot of word repetition, combined with very simple sentence structures. A character's power is often represented by repeated lines, where the only thing that changes is the damage dealt. This would be normal in a game, not so in a book, even if it belongs to the LitRPG genre.
Going further, the story is somewhat unique, however character description is lacking, especially when it comes to the main character. We rarely read about his emotions, unless it is influenced by the current situation, e.g. anger due to a cheating contestant, etc.
The human characters are extremely naive. It is perfectly normal if they make mistakes, however these are ones that an adult would rarely make. Trying out a recipe, for example, would never, ever end in someone storming out of a house.
Would I recommend this book to anyone? No, not yet. It still needs a lot of work. This does not mean, however, that the book has absolutely no potential. The greatest stories often start out as a two-word note.