I need some late game help

I know I have to finish certain quest to unlock the silk and soul quest. I cannot find any info on these quests. How do I do them? 1: The Hidden Hunter 2: Wailing Mother 3: Clawbug Clearing 4: Roach Guts 5: Silent Halls 6: Fastest in Pharloom 7: Infestation Operation 8: Rite of Rebirth

Any help whatsoever will be HIGHLY appreciated.