Kill the runway pirate for a drop and Crystal Flash if needed. To interrupt, you can either use heat, or stand in the acid at the very end of the runway. Acid damage does not accumulate during reserve trigger as heat does, so escape quickly to minimize exposure.

Entrance condition:

{
  "comeInWithRMode": {}
}

Requires:

{
  "or": [
    "h_heatedCrystalFlashForReserveEnergy",
    {
      "and": [
        "h_RModeCanRefillReserves",
        {
          "enemyKill": {
            "enemies": [
              [
                "Yellow Space Pirate (standing)"
              ]
            ]
          }
        },
        {
          "resourceMissingAtMost": [
            {
              "type": "Missile",
              "count": 0
            }
          ]
        },
        {
          "partialRefill": {
            "type": "ReserveEnergy",
            "limit": 20
          }
        }
      ]
    }
  ]
}
{
  "canShineCharge": {
    "usedTiles": 20,
    "gentleDownTiles": 6,
    "openEnd": 1
  }
}
{
  "or": [
    "h_heatTriggerRModeSparkInterrupt",
    {
      "and": [
        {
          "autoReserveTrigger": {}
        },
        "canRModeSparkInterrupt",
        {
          "acidFrames": 32
        },
        {
          "heatFrames": 32
        }
      ]
    }
  ]
}