Lure the Gamets up out of the water. It may be helpful to freeze them on the ascent to prevent them from separating and moving horizontally. Positioning is much easier with Morph; simply morph on the runway before they start separating. Freeze a Gamet while there is a half-tile gap between it and the runway in order to extend it as much as possible.

Requires:

"h_canNavigateUnderwater"
{
  "or": [
    "h_canTrickyFrozenEnemyRunway",
    {
      "and": [
        "h_canFrozenEnemyRunway",
        "Morph"
      ]
    }
  ]
}

Exit condition:

{
  "leaveWithRunway": {
    "length": 6,
    "openEnd": 0
  }
}