Okay, I just checked literally everywhere. Even the places I had already checked before. I checked all 20 locations, And I apparently got them all. but I only have 19 skulls. Is this a glitch?
I dunno, did any of those screens shake when you entered them? If te screen shakes, than that's the one you're missing. (Assuming you got the item that makes the screen shake when you're close to a skull).



