TIL there's a method to the madness of dungeon chest loot. It's based on distance from the entrance. The first chest will always have a muramasa, unless it generates above 0 feet. The next one has a cobalt shield, then an aqua scepter, then a blue moon, then a magic missile, then the valor. After that it'll be a wooden chest with a gold key, and then finally a handgun. After that it goes through the list again.
As it turns out, featherfall potions are insanely powerful against Skeletron. Combine that with a few other buffs and a Bee's Knees, and expert mode Skeletron is kind of a joke. I didn't even need the molten armor I made!
I started a new ranged expert playthrough, and so far I've gotten a bone pickaxe, full gold armor, 13 life crystals, and a gold bow with two and a half stacks of frostburn arrows. I'd say I'm doing well so far.
Mantis Lords has got to be one of my favorite fights in all of Hollow Knight. It feels very tight, but there's a good bit of wiggle room. Not easy, but not unfair, it's the most literal interpretation of 'dance of death' I've ever seen.
I have a theory for the whole 'is Kris the knight?' thing. The main argument against Kris being the knight is their soul. They can't really move too far from it, so how do they get to the library? The answer was in chapter 1 the whole time. The wagon. Kris throws the soul in the birdcage, which is in a little wagon, so why not pull the wagon around town?