The main character is just too edgy. There are great moments but oftentimes you awnt to strangle either the character or the author.
One of the main reasons this is a favourite of mine is it feels more like a realistic character progression than that which occurred in canon. Harry decides that having a murderous maniac after him is actually a pretty good reason to start taking his education, skills, knowledge, and general attitude to another level. Second, I am a major fan of the Harry/Fleur pairing and there are very few good works that feature this pairing that aren’t pure smut, abandoned, or in progress. This work is quite well written, although there are occasions where it is obvious changes have been made, errors overlooked and so on but these do not detract from the overall quality or enjoyment of the fic for me. This is after all, fanfiction and it cannot be expected that perfect grammar, prose, and structure is present at all times. For a 500k+ word count these mistakes are rather few and far between. I have read this fic 3 times, I enjoy the story, find the length to suit my tastes, and it is well written - in a mature enough style to not feel laborious. My only wish is it had gone on even longer, but that is something I wish for every story I enjoy.