I found this story by accident, but I couldn't be happier. I like your characterizations of Harry, Tonks, and the others. I also like how you have the romance between Harry and Tonks progressing. I also like how you have Harry making mention of things muggle. One of the things that always bother me about a lot of HP fanfiction is the fact that authors go to great pains to never mention, in any way, Hermione or Harry's muggle past. I mean, Hermione is a muggle and Harry was raised as one. Surely they would bring those influences with them to the wizarding world.
You also use humor, drama, and action very well to help vary the pace of the story and keep it very interesting.
Thanks for a great story.