Anyone up for a challenge? Try this. (BL 110 + Simon's Bowblade +10 w/ Cursed BloodGems)
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TIPS: Use as many R2 and Charged R2 attacks as possible to do more damage per shot (you may run out of Quicksilver Bullets otherwise).Learn to dodge so that you use your bood vials mainly for the most blood bullets.
Boss: Bloodletting Beast = Arrows Only (Simon's Bowblade) = Bloodborne Challenge