The only way the Wavers will get to the door is if the right crumble blocks are all broken. This assumes that Samus comes from the left with Speed, a mockball, or a crouch gate clip. After the crumbles are broken, shoot the ceiling block and wait by the door for the Waver to come. Note that if Samus takes more than 35 seconds after entering the room, before shooting the ceiling, the Waver will not come down.

Requires:

{
  "obstaclesNotCleared": [
    "A"
  ]
}
{
  "or": [
    "SpeedBooster",
    "canMockball",
    {
      "and": [
        "canCrouchGateClip",
        {
          "or": [
            "canXRayTurnaround",
            "canMoonwalk"
          ]
        }
      ]
    }
  ]
}

Exit condition:

{
  "leaveWithGModeSetup": {}
}

Unlocks doors:

{"types":["ammo"],"requires":[]}

Dev note: FIXME: It is possible to come in from the right and get under the gate to break the crumbles.