My beloved sword to defend The Grand Archieves.

Is there a way to get this early, as in, without opening grand archives to farm it or getting Greirat far enough to where he sells it?

Does darkmoon blade work as well as lighnting on a quality build?

Blessed gets higher damage at 60 faith and base stats then lightning infused, along with blessed being primarily physical, vs split. Blessed also gives a nice amount of HP regen, and when stacked with other regen tools it becomes quite powerful.

This weapon is garbage. Starting with the basic of being split damage, which just lowers your overall damage per hit in exchange for being able to deal a bit of chip damage through sheilds... wait. This is an Ultra. If someone blocks you, you will almost assuredly break their guard in 1-2 hits. Kind of a moot point with this weapon, but it's there if you need it. Moving on, the moveset is pretty standard along with standard range and a standard weapon art. The weapon art is negligible as 2 years after the game released, no one left playing is noob enough to gather some frequent flier miles by deciding to trade when they hear the "whoosh" of the weapon art boosting your hyper armor over level 9,000. Infusions suck as you can't get rid of the split damage, but most amusing is lightning infusion. While on a standard, non split damage weapon, a lightning infusion will cut the pure physical damage by about 45% and give you an equal amount of lightning damage equal to your new physical damage, this weapon takes a slightly larger hit to physical but gives a much lower boost to lightning. Essentially, while it would appear marginally better as a lightning infusion weapon than a pure physical weapon infused the same way as a result of lightning being a slightly higher percent of total damage, it's not. Also blessed weapon works slightly different on this than other pure physical weapons that take a flat 50% hit to damage, this weapon takes a 50% hit to physical but only about 30% to the lightning, but both will then scale off faith which makes this weapon marginally better than everything else with a blessed infusion. But seeing as blessed infusions offer the worst overall damage gains just barely beating a raw infusion... I'm not sure it's worth mentioning it does one of the worst infusions the best. Will have to admit that the weapon looks cool, it just doesn't offer anything that another Ultra can't do ever better.

Sorry if stupid question, but at something like 35/45 dex/faith which infusion would provide more dmg? Sharp + lightning blade buff or blessed/lightning infusion?

Uhhhh sharp and refined are best for physical damage? I have 16 dex, 64 str and according to soulsplanner a heavy infusion with these stats give more ar than a 40/40 build with a refined infusion AND 24 str, 60 dex with a sharp infusion. Thats physical ar btw. This page may need an update.

my build for now (sl 82) and is byfar the best damage weapon for pyro with chaos (mine) or dark

https://mugenmonkey.com/darksouls3/316519

If your looking for a strength faith build this is your weapon. Heavy infuse and use lightning blade. do not lightning infuse as it does less damage than with buff. You will also want to have good int to increase the power of the buff.

At 60/40/60 st/dex/fth refined & lightning blade full 2h R2 did 1200 dmg in pvp