Requires:

{
  "or": [
    {
      "obstaclesCleared": [
        "A"
      ]
    },
    {
      "and": [
        {
          "enemyDamage": {
            "enemy": "Blue Sidehopper",
            "type": "contact",
            "hits": 2
          }
        },
        "canUseIFrames"
      ]
    }
  ]
}

Exit condition:

{
  "leaveWithSidePlatform": {
    "height": 2,
    "runway": {
      "length": 12,
      "openEnd": 0
    },
    "obstruction": [
      1,
      0
    ]
  }
}

Unlocks doors:

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

Dev note: Max extra run speed $2.B.