Great chapter, it seems that no Death Eaters as any luck with Portkey and Black, when the two combined... the Death Eaters get killed. :D
Keep up the good work.
Now Harry clobbers the bad guys without even knowing they're there. He's getting better all the time.
I've been thinking, though. If Harry is out to live a little, he needs to get some action. Any chance of some Harry-Henchgirl friskiness?
Using hard vacuum would be even better than hydrogen, and no explosion hazard either. I like it.
Good bit of literalism on the professor's part with that "hangover cure" too.