After eating some bacon I was one elevator ride up to the grand library guarded by dancing wizards and crystal infected hollows who packed a decent punch, but were quite slow. Climbing up to the top I suddenly came into a room occupied by Seath the Scaleless dragon, and not expecting a boss fight so soon promptly got my ass handed to me. Interestingly I revived in a prison cell, one I could not warp out of so I had to bust my way out past the lizard guards and jellyfish people before returning to the other half of the library proper.
On the other side of it was a field with crystal golems, one of whom contained a person who was freed it shattering against my sword. Ser Chubby popped out! Well, no it's the daughter of Ser Chubby looking for her dad. I tell her to check Blighttown before proceeding on into a large crystalline cave with even more crystal golems, giant moth magi and invisible paths over drops to certain death (because those are always fun).
Running to the end of the cave (literal dead end) on a "suicide scouting run" I am again jumped by Seath, surprising me this time with a lack of a boss fog. At this point I'm also being chased by weird crab things so I just figure I'll try my best since I'm cornered now anyway. Fortunately between my blade and the dragon breath the crabs all die, along with half the decor in the chamber.
Due to Seath's strangely ineffective dragon breath which summons lots of easily avoidable crystal spikes and big gaps to drink from my Estus Flask I'm soon going toe to toe with the overgrown reptile and surprise myself when I finally kill it! One lord soul down. It was even nice enough to spawn a bonfire so I could teleport out of there!
Not this time, dragon!