so i'm stuck in brinstar. i'm in a room that is divided by an upper level. on the ceiling, there are moving spikes that move up and down.. if i try to cross under them, i instantly fall through onto the bottom level. when i try to retreat into the room before, i can't because it's blocked by a door that can only be opened from the other side. help!

Hold down the B(Fire) button and then run across the crusty bricks. She'll glide across.
Random I know but it is infact the only way to get across.