In direct g-mode, the door will not close, and the in-room doorsill gives enough running room to make it up to the invisible ledge.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "direct",
    "morphed": false
  }
}

Requires:

"canPreciseWalljump"
"canTrickyJump"
{
  "or": [
    {
      "spikeHits": 1
    },
    "h_canBackIntoCorner"
  ]
}