Fall down the shaft then Crystal Flash to where the ceiling crab will hit Samus from above. Samus needs to be positioned under the left edge of the large central structure and time the Power Bomb to avoid killing the crab.

The crab only briefly intersects Samus while it is turning the corner, so it won't double hit Samus.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "direct",
    "morphed": true
  },
  "comesThroughToilet": "no"
}

Requires:

"h_artificialMorphComplexRModeCrystalFlashInterrupt"
{
  "ammo": {
    "type": "Missile",
    "count": 10
  }
}
{
  "ammo": {
    "type": "Super",
    "count": 10
  }
}
{
  "refill": [
    "ReserveEnergy"
  ]
}
{
  "autoReserveTrigger": {}
}