Killing Golden Torizo only with missiles using enemy state manipulation to get missiles to connect. This can be done by rolling under GT, triggering the sit attack, and then shooting missiles during the stand up animation. By pushing GT to the door and rolling into the door during a jump back, the sit can reliably be manipulated. But this setup is subpixel dependant and harder to setup again if GT moves unexpectidly. Use of the safe spot is expected. Keep missiles below 31 to control the fight. This fight takes multiple minutes.

Requires:

{
  "notable": "Safe Spot Kill"
}
{
  "notable": "Missiles Only Kill"
}
"h_heatProof"
"Morph"
{
  "resourceCapacity": [
    {
      "type": "Missile",
      "count": 15
    }
  ]
}
{
  "or": [
    {
      "resourceCapacity": [
        {
          "type": "RegularEnergy",
          "count": 199
        }
      ]
    },
    {
      "resourceCapacity": [
        {
          "type": "ReserveEnergy",
          "count": 100
        }
      ]
    }
  ]
}
"canBeVeryPatient"

Clears obstacles: f_DefeatedGoldenTorizo

Sets flags: f_DefeatedGoldenTorizo

Dev note: It is easy to make mistakes with this strat, so some capacity is given for leniency. You can farm up resources readily enough.