Requires:

{
  "resetRoom": {
    "nodes": [
      1
    ]
  }
}
{
  "or": [
    {
      "and": [
        "ScrewAttack",
        {
          "cycleFrames": 310
        }
      ]
    },
    {
      "and": [
        "Plasma",
        {
          "cycleFrames": 440
        }
      ]
    },
    {
      "and": [
        "Wave",
        "Spazer",
        "canDodgeWhileShooting",
        {
          "cycleFrames": 500
        }
      ]
    },
    {
      "and": [
        {
          "notable": "Doorway Sidehopper Kill"
        },
        {
          "doorUnlockedAtNode": 1
        },
        "canTrickyDodgeEnemies",
        {
          "or": [
            {
              "and": [
                "Wave",
                {
                  "cycleFrames": 750
                }
              ]
            },
            {
              "and": [
                "Spazer",
                {
                  "cycleFrames": 840
                }
              ]
            },
            {
              "and": [
                "Ice",
                {
                  "cycleFrames": 1000
                }
              ]
            },
            {
              "cycleFrames": 1440
            }
          ]
        }
      ]
    }
  ]
}

Clears obstacles: A

Resets obstacles: B

Farm cycle drops: 2 Sidehopper

Open the door, walk a safe distance into the doorway, and turn around. Wait for the Sidehopper to do 4 hops before beginning to shoot it. It can then be safely killed from inside the doorway. It is not recommended to moonwalk into the doorway, as this carries risk of shooting the Sidehopper pre-maturely. After bringing the second Hopper on camera, quickly get back to the right and crouch against the the ledge while aiming upward to safely kill it.

Shooting the Sidehopper delays its AI, which affects its RNG on later hops. If the Sidehopper is shot too early, it may do a short hop directly into the doorway. After the Sidehopper initiates its 4th hop (in which it will land on the ground in front of the ledge), it will be stuck in a safe pattern for long enough to kill it, regardless of whether it does large or small hops afterward.

Requires:

{
  "notable": "Doorway Sidehopper Kill"
}
{
  "doorUnlockedAtNode": 1
}
"canTrickyDodgeEnemies"

Clears obstacles: A