Use a Super to knock off a Sova and follow it to this door. The fastest Sova is just above the middle left door, while it is on the left side of the platform, which takes 45 seconds.

Requires:

"h_frozenEnemyRunway"
{
  "ammo": {
    "type": "Super",
    "count": 1
  }
}

Exit condition:

{
  "leaveWithRunway": {
    "length": 6,
    "openEnd": 1
  }
}