What is LK runs? I see a lot of people posting that they do these in single player

for runes

It’s lower kurast in A3. There are up to 6 super chests there and it’s ideal for finding HRs up to Ber

Here is a very good guide for LK farming if you want to know more about it.

https://www.diabloii.net/forums/threads/lower-kurast-lk-faq.720492/

Thanks what are the immunes like there? I have a 72 orb sorc it’s only in act 2 hell so far I’m trying to get smoke and maybe a few more good items before going through act 2 hell

Lower kurast runs, doubt you can do them now with the amazing queue and all.. videos on yt

Good guide for everything except the drops. There's way more hr patterns than that