Carefully get into position at the bottom of the room without getting hit by the pirate. The pirate will not touch Samus if she is high enough on the sloped tiles, but move too high and it will see Samus. Time the Power Bomb to go off so that Samus starts Crystal Flashing during or before the pirate turns around. With Gravity equipped, Samus will need to be boosted by the Power Bomb only while the pirate is moving its head.

Samus will need to be able to survive a second hit after the Reserve trigger. This can be done with a 50% enemy damage reduction and no E-Tanks; a 75% reduction is not recommended and would require disabling and reenabling suits with a precise pause abuse. Without suits, this is possible with an E-Tank and two R-Tanks; it is sometimes possible to jump away after the Reserve trigger, but can require some luck.

Requires:

{
  "obstaclesCleared": [
    "R-Mode"
  ]
}
"canRModeCrystalFlashInterrupt"
{
  "ammo": {
    "type": "Missile",
    "count": 10
  }
}
{
  "or": [
    {
      "and": [
        "h_partialEnemyDamageReduction",
        {
          "resourceAtMost": [
            {
              "type": "RegularEnergy",
              "count": 19
            }
          ]
        }
      ]
    },
    {
      "and": [
        "canTrickyCarryFlashSuit",
        {
          "resourceCapacity": [
            {
              "type": "RegularEnergy",
              "count": 199
            }
          ]
        },
        {
          "resourceCapacity": [
            {
              "type": "ReserveEnergy",
              "count": 199
            }
          ]
        }
      ]
    }
  ]
}

Resets obstacles: R-Mode

Dev note: There is not an artificial morph variant from door 2, as Samus will be off-camera and can't get hit by the pirate. FIXME: This is a good example of where it would be nice to be able to end with more than 50 Energy, as Samus could spark to the top left. FIXME: A 75% damage reduction method needs to be documented for if Samus only has Gravity and it provides 75% reduction.