Exit condition:

"leaveWithRunway": {
  "length": 4,
  "openEnd": 1
}

Stand a few pixels away from the bottom of the stairs to easily position the Covern and extend the runway as far as possible.

Requires:

"h_frozenEnemyRunway",
{"not": "f_DefeatedPhantoon"},
"canRiskPermanentLossOfAccess"

Exit condition:

"leaveWithRunway": {
  "length": 7,
  "openEnd": 0
}

Requires:

{"not": "f_DefeatedPhantoon"},
"canRiskPermanentLossOfAccess",
{"or": [
  "ScrewAttack",
  {"haveBlueSuit": {}},
  {"and": [
    "Plasma",
    {"cycleFrames": 60}
  ]},
  {"and": [
    "Wave",
    {"cycleFrames": 120}
  ]},
  {"and": [
    "Spazer",
    {"cycleFrames": 150}
  ]},
  {"and": [
    "Ice",
    "canDodgeWhileShooting",
    {"cycleFrames": 240}
  ]},
  {"and": [
    "canPseudoScrew",
    "canFarmWhileShooting",
    {"cycleFrames": 120}
  ]},
  {"cycleFrames": 540}
]},
{"cycleFrames": 480}

Farm cycle drops: 1 Covern

Requires:

"h_CrystalFlash"

Entrance condition:

"comeInShinecharging": {
  "length": 3,
  "openEnd": 0
},
"comesInHeated": "no"

Requires:

"h_CrystalSpark"

Requires:

{"not": "f_DefeatedPhantoon"},
"canRiskPermanentLossOfAccess"

Exit condition:

"leaveWithDamage": {
  "enemy": "Covern"
}

Requires:

{"enemyDamage": {"enemy": "Covern", "type": "contact", "hits": 1}},
{"not": "f_DefeatedPhantoon"},
"canRiskPermanentLossOfAccess"