Took out Lautrec yesterday to avenge my Firekeeper. Kind of an annoying fight, 3 of them against one of you, and the spearman is annoying af. He has full tracking, so unlike most other spearmen in the game, you can't sidestep his attacks, as he rotates like an AA gun. He also has rather annoying AI. The spear has massive reach, and he will poke you like a porcupine the moment you focus on anyone else, but if you focus on him, trying to parry him, he will just raise his shield and turtle while his buddies beat you.
So I did what any reasonable person would do when faced with cheese: I cheesed right back. If you climb the stairs on the other side, you can snipe the front line without the others aggro-ing. Black bow of Pharis + feather arrows, and that spearman became a porcupine, for the rest of his short life. Then I easily dispatched the caster, and focused on Lautrec himself. Took a couple of fights to gauge his attack patterns, but then a couple of parries + Hornet Ring took care of that bastard. The firekeeper is back!
Then, I descended into the depths of Demon Ruins and took care of the rather curiously named Ceaseless Discharge. Japanese humor? Used the bow in that fight, he has a good tell when he is about to slam the tentacle down, so roll, pew pew, roll pew pew, done. Onward to the witch of Izalith.