It's incredibly well-written, and I definitely recommend checking it out. Like other reviewers said, reading it is definitely a commitment. In fact...
My only problem with this story is that the pacing and plot are so slow. That's not a bad thing -this fanfiction is in fact one of the best, if not the best, demonstrations of how to make a good story where character interaction, world-building and politics take precedence over just plot, as most fanfictions usually do-, but if you were looking for action, relatively quick resolutions, or just faster development, this isn't the story for you.
The story focuses more on showing the world under Voldemort's rule, how it has affected everyone, and the relationships between all the characters. It is almost beautiful, in how meticulous it is in presenting the setting and its players and their interactions, but it is also its weak point: I gave up after reading twenty-something chapters because, beyond the amazing character interactions, there wasn't much holding my attention there beyond the promise that something would eventually happen, and I didn't have the patience to keep reading when the pacing didn't appear to accelerate much by that point.
I'm still not sure where the plot was going, or if it was going to go somewhere interesting at all, and I think it's a problem that there were only hints of what was going on behind the scenes for twenty-plus chapters, when we should have passed those initial stages by now. At least, it felt like it was still in the initial stages to me. I could very well have missed the plot points, with how subtle the ones I noticed that were there were. Every time I thought something interesting was going to happen, it got quickly shoved aside for more character interaction or it got resolved before it went anywhere. All those false starts were very frustrating.
To be fair, maybe all that was just a side effect of the story simply being so long.
Anyway, while it's not for the impatient, like me, do give it a try, for its interesting and well-written characters and disturbingly well-ruled-by-Voldemort world setting, if anything.