Requires:

{"or": [
  "Gravity",
  {"and": [
    {"not": "f_DefeatedPhantoon"},
    "canRiskPermanentLossOfAccess"
  ]}
]}

Exit condition:

"leaveWithRunway": {
  "length": 21,
  "openEnd": 0,
  "steepUpTiles": 3
}