Gain run speed using a platform below the door in the other room. Jump through the door, carrying upward momentum into this room.

Entrance condition:

"comeInWithSidePlatform": {
  "platforms": [
    {
      "minHeight": 1,
      "maxHeight": 1,
      "minTiles": 7.4375,
      "speedBooster": "no",
      "obstructions": [[1, 0]],
      "requires": [
        "canInsaneJump"
      ],
      "note": [
        "This applies to Warehouse Entrance.",
        "This requires a last-frame jump and specific horizontal alignment in order to make it past the overhang in the next room.",
        "A way to get a correct starting position is to jump, press against the ceiling overhang near the end of the runway,",
        "land, turn around away from the door, then jump and mid-air turnaround toward the door."
      ]
    }
  ]
}

Requires:

"canCrossRoomJumpIntoWater"

Dev note: With Morph or Speed Booster, even a 1-tile doorway runway is enough to make it up relatively easily; therefore, we don't consider side platform strats that require either of those items.