Moonwalk into the transition on the same frame that the Grapple Beam reaches the Grapple block. Continue holding Grapple through the door transition to initiate a teleport in the next room.

Requires:

"canMoonwalk"

Exit condition:

{
  "leaveWithGrappleTeleport": {
    "blockPositions": [
      [
        5,
        3
      ]
    ]
  }
}