Requires:

"canDash",
{"obstaclesCleared": ["A"]},
{"or": [
  "h_heatProof",
  {"and": [
    {"heatFrames": 690},
    {"or": [
      {"ammo": {"type": "Super", "count": 3}},
      {"ammo": {"type": "Missile", "count": 6}},
      "ScrewAttack",
      "Plasma",
      "Spazer",
      "Wave"
    ]}
  ]}
]},
{"or": [
  {"and": [
    "canCarefulJump",
    {"heatFrames": 420}
  ]},
  {"and": [
    {"heatFrames": 720},
    {"lavaFrames": 60}
  ]}
]}

Unlocks doors:

{
  "types": ["missiles"],
  "requires": [{"heatFrames": 20}]
}

Dev note: This can be used for collecting the item without needing to reset the room.