I seem to remember that in Azkaban his shields were invisible.
I don't recall invisible shields, but it's certainly plausible.
We've also seen him just flatly stop curse bolts in midair and then flick them away, without apparent shielding or obvious effort. He's got defense options like Smaug has gold coins.
If killing him was easy, someone would have done it before. Even though he had horcruxes, it's telling that he never actually had to respawn from one until he tried juggling dynamite and blew his own self up.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 112.
There is a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: