Requires:

"Ice"
{
  "enemyKill": {
    "enemies": [
      [
        "Metroid",
        "Metroid",
        "Metroid"
      ]
    ],
    "explicitWeapons": [
      "Super",
      "Missile"
    ]
  }
}
{
  "or": [
    "canPrepareForNextRoom",
    {
      "resetRoom": {
        "nodes": [
          2
        ]
      }
    },
    {
      "and": [
        "h_useMorphBombs",
        "canDodgeWhileShooting",
        "canEscapeEnemyGrab",
        {
          "metroidFrames": 120
        }
      ]
    }
  ]
}
{
  "or": [
    "canTrickyJump",
    {
      "enemyDamage": {
        "enemy": "Rinka",
        "type": "contact",
        "hits": 1
      }
    }
  ]
}

Clears obstacles: f_KilledMetroidRoom4

Sets flags: f_KilledMetroidRoom4