Raise the shutter by shooting a missile or upgraded beam at it. Stand on the right side of lowest safe tile and shoot diagonally down while crouched if using missiles, or standing otherwise. A basic beam shot will work if fired vertically down, onto the side of the spike. Then, get into the cove next to the bomb block and carefully wiggle in that camera scroll block to overload PLMs.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "any",
    "morphed": false
  },
  "comesThroughToilet": "any"
}

Requires:

"Morph"
"canTrickyJump"
{
  "or": [
    "canInsaneJump",
    {
      "ammo": {
        "type": "Super",
        "count": 1
      }
    },
    {
      "ammo": {
        "type": "Missile",
        "count": 1
      }
    },
    "Charge",
    "Ice",
    "Wave",
    "Spazer",
    "Plasma"
  ]
}
{
  "heatFrames": 0
}

Clears obstacles: E