This requires a precisely timed Crystal Flash, such that Shaktool hits Samus immediately after she gets Reserve Energy, to prevent getting double hit. With a second Reserve Tank and an Energy Tank, or the damage reduction from a suit, Samus is able to survive a second hit.

Entrance condition:

{
  "comeInWithRMode": {}
}

Requires:

"canRModeCrystalFlashInterrupt"
{
  "or": [
    {
      "and": [
        {
          "ammo": {
            "type": "Missile",
            "count": 10
          }
        },
        {
          "or": [
            "h_partialEnemyDamageReduction",
            {
              "and": [
                {
                  "resourceCapacity": [
                    {
                      "type": "RegularEnergy",
                      "count": 199
                    }
                  ]
                },
                {
                  "resourceCapacity": [
                    {
                      "type": "ReserveEnergy",
                      "count": 199
                    }
                  ]
                }
              ]
            }
          ]
        }
      ]
    },
    {
      "and": [
        {
          "ammo": {
            "type": "Missile",
            "count": 2
          }
        },
        "canComplexRModeCrystalFlashInterrupt"
      ]
    }
  ]
}