In this first part of the ending, Harry, Hermoine and Ron do the heavy lifting. They are alone, looking for answers without the help of other magicians like before. The toughest moments are really emotional, intense and tough to watch.

And maybe that's why some parts may get a bit boring here and there, because we barely have any other characters. The movie could've used more time for Voldemort's actions or the other heroic (secondary) characters.

Anyway, in the end, the story is well told, full of details that makes second viewing more rewarding and what it takes aways in "fun", it gives back in emotion.