HEY! I didn't know that I could opt-in for Offline Gameplay... that shuts out invaders entirely.

I had come from a
World of Tanks session where some idiot was using their Kinect microphone, and EVERYTHING was audible in his room, including his own game audio, coughs, and runny nose snorts. In these cases I always use the XBL Party to start a one-man Party and block out chat audio from everyone. When I started
Dark Souls while still in a Party, the game will not allow
Online Gameplay.
I made it up to the roof, summoned Praise-the-Sun-Boy, and went to freakin' town on the Gargoyles. Last time I didn't get the helm, so I was happy it dropped this time.
Then, feeling pretty good, I spent everything I could on stats, and went for a casual wander around the old digs while wondering where to go next. It was a bad idea.
I was in the area near the game's 2nd bonfire, where the firebombers are overlooking that narrow bridge. Wanted to target a guy ahead of me, instead targeted a firebomber above and to the left of the bridge, and the change in contextual movement immediately made me walk off the bridge. "YOU ARE DEAD."

Unfortunately I hadn't checked into a bonfire, so I had a long trek back. On the way, I slipped up against a mob and died again. :'(
Tonight I looked online about how to do Parries/Ripostes because the Asylum's "tutorial" moment didn't work for me, and now I am going back and revisiting all the early areas, wrecking major undead ass with parrying and riposting. It makes the battles a lot more exciting!