The SideHoppers can be killed safely from behind with Power Beam.

Requires:

"Morph"
{
  "or": [
    "Wave",
    "canDodgeWhileShooting",
    "h_usePowerBomb",
    "ScrewAttack"
  ]
}
{
  "obstaclesCleared": [
    "A"
  ]
}

Clears obstacles: C

Dev note: Killing the ceiling hopper is the only one that's not free. Killing the bottom two and leaving the left door is accounted for elsewhere.