12

Using only the short runway and spike pit, use one or two speedkeeps to speedball towards the item location. This requires either a very short shortcharge, or a second speedkeep in the spikes which also resets Samus' run speed with a crouch jump before spike i-frames expire.

Requires:

{
  "notable": "In-Room SpeedKeep for Temporary Blue"
}
"canSpeedKeep"
"canSlowShortCharge"
{
  "doorUnlockedAtNode": 1
}
{
  "or": [
    {
      "and": [
        "canChainTemporaryBlue",
        {
          "getBlueSpeed": {
            "usedTiles": 13,
            "openEnd": 1
          }
        },
        {
          "spikeHits": "n_speedKeepAttempts"
        }
      ]
    },
    {
      "and": [
        {
          "getBlueSpeed": {
            "usedTiles": 14,
            "openEnd": 1
          }
        },
        {
          "spikeHits": {
            "mul": [
              2,
              "n_speedKeepAttempts"
            ]
          }
        }
      ]
    },
    {
      "and": [
        "canChainTemporaryBlue",
        {
          "spikeHits": {
            "mul": [
              {
                "add": [
                  "n_speedKeepAttempts",
                  2
                ]
              },
              "n_speedKeepAttempts"
            ]
          }
        }
      ]
    }
  ]
}
"canSpeedball"

Dev note: 1 - Stop and bounce on left ledge. 2 - Jump from ledge and bounce in spikes. 3 - Stop and bounce on left ledge, then stop in spikes and speedkeep again.