Wow… apparently I have some dumb luck. I began a new character, and this weapon dropped on my second kill while at a merely level 10. Imagine my surprise reading this page. Seems that I’m set up quite early!
Just like to let any poor soul grinding this it looks like the two handed sword knight wint drop armor sets or ultra great sword if you already beat dragon rider. I did this for 12 hrs and decided to use a bonfire ascetic as i belived maybe it was glitched and after testing it out i started receiving armor sets and the ultra sword after 12 atempts hope this helps you lads save some time.
Go to the bonfire after the Dragonrider, equip a Giant Club (I infused mine with dark) walk through that corridor where there's only one of these knights, stronk bonk him to death, rinse and repeat and pray to RNGesus for the right drop.
I get this on nearly every playthrough but I've never used it because of the durability. Is it worth it if you bring repair powder/woodgrain ring, or will it fall apart before even clearing a single area?