1. I have never pvp'd anyone yet, but apparently there's a certain etiquette involved when battling someone. Some styles of playing are frowned upon. Maybe because they make the battle unfair in a way? I'm not totally sure, but check out some threads on that subject.
2. Check out this combo guide. Weapon proc is also discussed in that thread.
3. Here's a guide to what orbs do in the game.
Good luck.
Bookmarks