So I'm trying to enter Karba, but it keeps telling me I don't have what I need. I'm maxed at level 20 but can't seem to defeat the Hollow Knight (which I thought was an optional boss). Per my inventory I have the following prima materials:
Which one am I missing?
Also oddly enough I have the Icicle barnacle but I already placed it at the beach and frogboy has no more quests for me.
So is my game bugged?