Requires:

{
  "or": [
    {
      "enemyKill": {
        "enemies": [
          [
            "Green Space Pirate (standing)",
            "Green Space Pirate (standing)",
            "Green Space Pirate (standing)"
          ]
        ],
        "excludedWeapons": [
          "Bombs"
        ]
      }
    },
    {
      "and": [
        {
          "enemyKill": {
            "enemies": [
              [
                "Green Space Pirate (standing)",
                "Green Space Pirate (standing)",
                "Green Space Pirate (standing)"
              ]
            ],
            "explicitWeapons": [
              "Bombs"
            ]
          }
        },
        {
          "or": [
            "canCarefulJump",
            {
              "enemyDamage": {
                "enemy": "Mini-Kraid",
                "type": "spike",
                "hits": 3
              }
            }
          ]
        }
      ]
    }
  ]
}
{
  "or": [
    "canDodgeWhileShooting",
    "ScrewAttack",
    {
      "enemyDamage": {
        "enemy": "Mini-Kraid",
        "type": "spike",
        "hits": 1
      }
    }
  ]
}
{
  "or": [
    {
      "enemyKill": {
        "enemies": [
          [
            "Mini-Kraid"
          ]
        ],
        "excludedWeapons": [
          "PowerBeam",
          "Ice",
          "Wave",
          "Spazer",
          "Bombs",
          "Charge"
        ]
      }
    },
    {
      "and": [
        {
          "enemyKill": {
            "enemies": [
              [
                "Mini-Kraid"
              ]
            ]
          }
        },
        {
          "enemyDamage": {
            "enemy": "Mini-Kraid",
            "type": "spike",
            "hits": 3
          }
        }
      ]
    }
  ]
}

Clears obstacles: A

Dev note: Power Bombs only sometimes work on mini kraid for some reason.