I got summoned by the most interesting host of my entire life.
He immediately invited me to voice chat, and gave me the most interesting advice ever.
"Don't use the Covenant of Artorias... you don't need it"
So when we got to the four kings, I followed his advice and didn't use the ring... and surprisingly I didn't fall through the ground. I was very confused about it, until I realized I wasn't about to fight the four kings, this man is the best hacker I've ever gotten to play with!
Instead, about 200 hollows spawned, similar to how the Four Kings Spawn, and started to charge us.
Once they were dead, 200 Balder Knights spawned, and did the same.
We went down the line, and got to "round 12", where he finally got backstabbed by a silver knight.
I've never had more fun. I friended him, and we did this survival mode he'd modded together about 10 more times before he had to get off. Nothing else in PvE has the same shine anymore though... = (.