I am not good at summing up, but before saying my personal opinion, I will direct my score point by point.
About the writing, it's good, you could almost say that it looks like a writing from a professional and, I can say it's improving a little every day. Although I'm not very experienced to analyze this kind of thing.
Upgrade? You could say it's almost a daily update. Except for some improper events (like any person), but it is kept up to date. To the point that it is an almost insane rhythm.
Characters? Bearing in mind that it is based on the game of bloodborne and, it has 3 fixed characters developing (the others of the beginning do not count them, but they had their part). They are not at all flat characters or devoid of carizma.
In others it could directly describe that a character is "charismatic" and then in the development does not show it at all. here? It will not give Spoilers. But they are continually developing, the characters have their personal "evolution" in several aspects and, it goes deeper into them chapter by chapter.
He has no illogical moments to his "character", they have that "spark", which one would say could say that he "feels" like real people and not just a "character". Really satisfactory.
World Background? Well, it's bloodborn XD. I do not know how to say it, but it keeps well the original, thetrical, helpless, desquisiante, bloody, intriguing and with a hint of madness.
For other aspects, everything is simply excellently detailed, including "zones" that are not found in the original game. There were only 2 parts that were somewhat confusing, but only that from chapter 1 to chapter 177. It is not something that one would have to fix a lot.
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I already said that I was not good at summarizing ...
Personal opinion.
It is a good story, it contains moments of action, reflections, recapitulation of past events, necessary transit chapters and, at the right time, some literary resources are used to make the matter as fluent as possible.
It takes a while to get to the part where the author can take greater liberties to develop more than what the "game" is. He also put his own adaptation of the original mechanics and, I can say that it is a nice result.
Taking into account that it is based on a "world" already created, I would say that it is an excellent job. Also, how the original game is very "ambiguous" in many ways.
The author takes liberties based on his own theories, "filling" possible gaps in which he can work. But without losing the ecence of history.