Just roll with a couple of sunbros whilst in human form, squash any invader who comes in flat and wait for their delicious salty tears moaning about how they were "looking for a fair fight" in spite of there now being an arena where you can guarentee a fight will be 1 vs 1.
All the rules you need to play a videogame are coded into it, adding extras proves you lack the ability to play well by those existing rules.
Don't worry, if you are. This game grows and evolves with you.
GOD OF WAR or DARKSIDERS just get easier. Dark Souls evolves with the player.
Not understanding why people would invade is phase 1. Dying to join Darkmoon once you're strong and good at pvp is phase 2. Getting a thrill of the unknown when they do invade is phase 3.
...tasting the sin of invading and killing others is a phase you will reach. We all get seduced by the dark side on Lordran at some point. Some are low life, ganking, Greifing bottom feeders. Others are higher level wraiths, who just enjoy a little mischief and murder. And a classy duel or two.
Not sure if joke topic, but try being hollow all the time like me. I don't do it on purpose... I'm just always dying since I'm new to the game. Demons souls offered more chances to PvP since after every boss kill you regained your human form whether you want to or not.