Avoid the fireballs while waiting for the Sovas. If the fireball is going to be at a bad cycle, it can help to kill the first Sova.

Entrance condition:

"comeInNormally": {}

Requires:

{"heatFrames": 1200},
"Morph"

Exit condition:

"leaveWithDamage": {
  "enemy": "Sova"
}

Unlocks doors:

{"types": ["missiles", "super"], "requires": []},
{"types": ["powerbomb"], "requires": ["never"]}