Roll under the top Fune fireball then roll off the edge to avoid the first Boulder. Kill a Fune or use the Boulder for IFrames to get through the tricky section. It is also possible to Kago the Fune to save health compared to taking a Boulder hit.

Requires:

"Morph"
{
  "or": [
    "canTrickyJump",
    {
      "ammo": {
        "type": "PowerBomb",
        "count": 1
      }
    },
    {
      "ammo": {
        "type": "Super",
        "count": 1
      }
    },
    {
      "enemyDamage": {
        "enemy": "Boulder",
        "type": "contact",
        "hits": 1
      }
    },
    {
      "and": [
        {
          "enemyDamage": {
            "enemy": "Fune",
            "type": "kago",
            "hits": 1
          }
        },
        "canKago",
        "canHitbox"
      ]
    },
    {
      "and": [
        "Ice",
        "canCarefulJump"
      ]
    }
  ]
}