Requires:

{
  "obstaclesCleared": [
    "A"
  ]
}
{
  "obstaclesNotCleared": [
    "R-Mode"
  ]
}
"h_heatedCrystalFlash"

Resets obstacles: A

Unlocks doors:

{"types":["super"],"requires":[]}
{"types":["missiles","powerbomb"],"requires":["never"]}

Dev note: FIXME: Add acid-filled version of the Crystal Flash, and requirements to unlock the door with Missiles and Power Bombs.