Run with 7 tiles (no openend) of speed to jump (after the transition) to reach the far left ledge. Either kill or Kago through the Fish enemy.

Entrance condition:

{
  "comeInRunning": {
    "minTiles": 6.4375,
    "speedBooster": true
  }
}

Requires:

"canCrossRoomJumpIntoWater"
"canTrickyDashJump"
"canDodgeWhileShooting"
{
  "or": [
    {
      "and": [
        {
          "ammo": {
            "type": "Super",
            "count": 1
          }
        },
        "canDownGrab"
      ]
    },
    {
      "and": [
        "Charge",
        "Plasma",
        "canDownGrab"
      ]
    },
    {
      "and": [
        "Plasma",
        "canHitbox",
        "canDownGrab"
      ]
    },
    "canTrickyDodgeEnemies"
  ]
}