Ok, heres some advice for the Blueblood Sword:
Use the Assassin's Mask with the Ancient King's set, with the Eternal Warrior's ring and Clever Rat's ring in body form. And the Cling Ring with Friend's or Foe's ring. And an offhand morion blade. I've won so many battles by using hypermode. I can't begin to describe how important this is.
A baby's nail is a great PvP weapon.
Tips and Tricks:
Spamming R1 is a BAD IDEA. You shouldn't spam and wait until you hit, attack once, and if it hits, spam R1, if it doesn't , wait for another chance to strike.
If the enemy keeps rolling sideways, and your narrow arc R1 attacks aren't connecting, use R2 twice, if you hit him with it and he's out of the R1 attack range, roll forwards, hit him, and then spam R1 or R2.
If Light Weapon wears off, try using the Baby's Nail, chances are the enemy will run off and try to heal, this leaves them open to a backstab, or you could heal and use light weapon again, you can always roll backwards a couple of times and buff then.
Oh and by the way, if your against a mage or spellsword, you might want to consider removing the Morion Blade and replacing it with a Dark Silver Shield for the magic defense, but that's your call.
Hope this helps.
