Only requires a runway of approximately 1 tile in the adjacent room. Take two Mochtroid hits or kill it using a Power Bomb or 5 Bombs.

Entrance condition:

{
  "comeInJumping": {
    "speedBooster": "any",
    "minTiles": 1
  }
}

Requires:

"canJumpIntoIBJ"
{
  "or": [
    {
      "ammo": {
        "type": "PowerBomb",
        "count": 1
      }
    },
    {
      "and": [
        "canCeilingBombJump",
        {
          "enemyDamage": {
            "enemy": "Mochtroid",
            "type": "contact",
            "hits": 1
          }
        }
      ]
    },
    {
      "and": [
        "canDoubleBombJump",
        {
          "enemyDamage": {
            "enemy": "Mochtroid",
            "type": "contact",
            "hits": 2
          }
        }
      ]
    }
  ]
}
"canCrossRoomJumpIntoWater"
"canMomentumConservingTurnaround"
"canTrickyJump"

Dev note: The rhythm for placing 4 Bombs quickly is the main component of ceiling bomb jumps.