Requires:

"h_canNavigateHeatRooms"
{
  "heatFrames": 100
}
{
  "or": [
    {
      "and": [
        {
          "heatFrames": 50
        },
        {
          "ammo": {
            "type": "Super",
            "count": 1
          }
        }
      ]
    },
    {
      "obstaclesCleared": [
        "A"
      ]
    }
  ]
}

Clears obstacles: A

Unlocks doors:

{"types":["missiles"],"requires":[{"heatFrames":20}]}
{"types":["super"],"requires":[]}
{"types":["powerbomb"],"requires":[{"heatFrames":40}]}

Dev note: FIXME: The gate can be opened from a distance to save some health.