Stand (don't crouch) next to the door and shoot diagonally down into the sand until the puyos are killed.

Requires:

"canDodgeWhileShooting"
{
  "resetRoom": {
    "nodes": [
      1
    ],
    "mustStayPut": false
  }
}
{
  "refill": [
    "Energy",
    "Missile",
    "PowerBomb"
  ]
}