Boulders can be killed by Super Missiles or by Pseudo Screwing. Funes are weak to Super Missiles and Power Bombs.

Requires:

{
  "enemyKill": {
    "enemies": [
      [
        "Fune"
      ],
      [
        "Boulder"
      ],
      [
        "Fune"
      ]
    ]
  }
}