Brandon Sanderson entered my sphere of consciousness when he took up the flag for Robert Jordan’s Wheel of Time series when Jordan passed away in 2007. Sanderson did a great job with a Wheel of Time series that, even for fans, had grown rather moribund over the last several volumes. If he was good enough to take over for one of the most popular fantasy authors of the last 20 years, it stood to reason that his independent stuff was pretty good as well.
From that background, this book is very surprising. This is the much more classic fantasy novel style, which is to say that it tells one story for the duration of the book. It's a good story, as far as fantasy novels go, but very little like Jordan's style of huge array of characters in completely different locations with shifting narrative point of view.
When not viewed as a comparison with Jordan's series, the novel is a good, page-turning fantasy series that doesn't cover anything particularly new. The promise of the book cover that it is about a hero who failed feels kind of cheap, as the book doesn't actually tell the story of that hero, instead telling a story that occurred more than a thousand years afterward. If you're going to make a book that promises a modern fantasy heroic tragedy, then you better deliver. Such a book would be amazing, a huge change from the usual "Hero sets out to naively change the world, ultimately succeeds" trope.
The book had hooks. I enjoyed reading it, didn't want to put it down, and was sad when it finished. However formulaic it might be, I still have to admit that I liked it.