Brinstar part 3
okay so I'm in norfair... everything is pinked out and I'm pretty sure there's nothing left to explore her for now... so back through the only elevator out of Norfair, leading back to Brinstar...
found the X-Ray scope at that one blue sidepath in Brinstar with the fireflies lighting up a dark room... spent a while trying to get across here by just using frozen enemies as platforms earlier... but now I can easily get across with the grapple beam... found the x-ray visor, which you needed to use right away to find the path leading out of here...
and yeah a lot of other stuff to get in Brinstar too, including a side path near that one missile in a pinked-out area that I needed the grapple beam for... it's entirely unmapped... since this game doesn't show any indication of doors in the map's room outlines either, this path was really well hidden... wouldn't have found it without the x-ray visor. it lead to a power bomb expansion.
and that path below where I think you got the first power bomb... a watery hallway that you need the gravity suit to get through.