12

Manipulate the Pirates to the right wall while climbing the room. Kill all the Pirates while moonfalling down the right side. Then quickly gain a shinecharge, crouch, and perform a diagonal shinespark to the top, collecting the drops along the way.

Requires:

{
  "notable": "Behemoth Shinespark"
}
"h_ZebesIsAwake"
"canTrickyDodgeEnemies"
"canFarmWhileShooting"
"Morph"
"canMoonfall"
{
  "or": [
    "Plasma",
    "ScrewAttack",
    "canInsaneJump"
  ]
}
{
  "resourceMissingAtMost": [
    {
      "type": "Missile",
      "count": 0
    }
  ]
}
{
  "canShineCharge": {
    "usedTiles": 28,
    "openEnd": 0
  }
}
{
  "shinespark": {
    "frames": 50,
    "excessFrames": 3
  }
}
{
  "obstaclesCleared": [
    "A"
  ]
}
{
  "or": [
    "h_ClimbWithoutLava",
    {
      "obstaclesNotCleared": [
        "B"
      ]
    }
  ]
}