Run and jump onto the third single-tile platform, then jump over the Cacatac (or kill it). Fire a shot and activate the shinespark wind-up. Wait until the shot hits the door before sparking.

Entrance condition:

"comeInShinecharged": {}

Requires:

{"shineChargeFrames": 140},
"canShinechargeMovementComplex",
{"or": [
  {"enemyDamage": {"enemy": "Cacatac", "type": "spike", "hits": 1}},
  {"enemyKill": {
    "enemies": [["Cacatac"]],
    "explicitWeapons": ["Missile", "Super", "Wave", "Spazer", "Plasma"]
  }},
  "canShinechargeMovementTricky"
]},
{"shinespark": {"frames": 24, "excessFrames": 0}}

Exit condition:

"leaveWithSpark": {}

Unlocks doors:

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