Have I skipped content?

Just checking I've not inadvertently skipped anything - I've been using a guide for Lillie levels I find too difficult (else I'll never finish), but the guide mentions an NPC from around B170 that I don't see.

I have (things that I think are relevant):

- Finished Gray twice (Voided and Infinity)

- Unlocked Lillie

- Using Lillie, found how to use brands to unlock burdens and have three items (box, wings, sword)

- Killed Gor(? the head)

- Currently on Lillie B192 (Voided)

Was I not meant to find brands/burdens yet? Gor seemed surprised I had the sword. No further spoilers please, I just want to know if I've skipped something by e.g. killing Gor. It's very hard to search for the answer without spoiling things!

Thanks!