Kill the top hopper quickly; the left hopper is more random. To be safe, plan to retreat right while attacking. It also helps to attempt to move the hopper off camera between attacks.

Requires:

"canDodgeWhileShooting"
"canTrickyJump"
"canCameraManip"
{
  "enemyKill": {
    "enemies": [
      [
        "Blue Sidehopper",
        "Blue Sidehopper"
      ]
    ]
  }
}

Clears obstacles: A

Unlocks doors:

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