Once the camera unlocks, back up against the right bubble. Start running once the Big Boy attaches, and begin windup before Samus's energy reaches 01.

Entrance condition:

{
  "comeInNormally": {}
}

Requires:

"canShinechargeMovementTricky"
{
  "notable": "Baby Drain Spark Interrupt"
}
{
  "or": [
    {
      "resourceAvailable": [
        {
          "type": "Energy",
          "count": 799
        }
      ]
    },
    {
      "and": [
        "Varia",
        {
          "resourceAvailable": [
            {
              "type": "Energy",
              "count": 399
            }
          ]
        }
      ]
    }
  ]
}
{
  "or": [
    {
      "canShineCharge": {
        "usedTiles": 18,
        "openEnd": 0
      }
    },
    {
      "useFlashSuit": {}
    }
  ]
}
"canRModeSparkInterrupt"
{
  "resourceAtMost": [
    {
      "type": "RegularEnergy",
      "count": 1
    }
  ]
}

Clears obstacles: A