1 2 3

Entrance condition:

{
  "comeInWithGrappleSwing": {
    "blocks": [
      {
        "position": [
          8,
          3
        ],
        "note": "Grapple Beam Room"
      },
      {
        "position": [
          7,
          3
        ],
        "note": "Colosseum"
      }
    ]
  }
}

Requires:

"canGrappleJump"

Clears obstacles: door_1