So, today I've finally gotten into some serious PvP action. I was on NG+, on my way to kill Sif again, and I happened to enter the Darkroot Garden. Now, as I was in human form, I didn't have to wait long before I was jumped by an invader. This one was wearing a Fog Ring, so I thought; two can play that game, and equipped my own ring. I was wearing full Havel set but the other guy was packing some serious weaponry (big fiery axe, didn't know exactly what it was), but he was easily dispatched by my Demon's Spear +5 (backstabs).
Immediately a second one jumped me, but he probably saw that I was higher level (I was firing off Homing Crystal Soulmasses) so he ran off into the woods. I didn't feel like chasing him so I camouflaged myself into a shrub and waited for him to come back. He didn't, but some other guy did. Walked straight past me, so I ran up and put three Crystal Soul Spears in his back (I would have paid good money to see the look on his face).
I changed back into a bush, hoping the other guy would return when he heard of the other one's demise. He did. I could have sworn he did a double take when an innocent looking shrub took a stab at him. He was wearing a Fog Ring, but I dispatched him after a short melee (he didn't even hit me). Immediately another one jumped in, but he was very low level, so I flattened him with a single Crystal Soul Spear.
And then peace returned to Darkroot Garden and I proceeded to kill Sif (he didn't stand a chance against my Demon's Spear). It was a good day.