Use a Super to knock off a Sova and follow it to this door. The fastest Sova is just above the shot blocks, which takes 30 seconds.

Requires:

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

Exit condition:

{
  "leaveWithRunway": {
    "length": 6,
    "openEnd": 1,
    "gentleUpTiles": 2
  }
}