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Run off or perform a short hop off the ledge into the Ripper and damage boost to the left of the spikes. Using the i-frames from the Ripper, quickly jump from the spikes to the item. With HiJump, it is also possible to avoid the damage boost and land right of the crumble blocks and get a good jump to the left.

Requires:

"canPrepareForNextRoom"
"canUseIFrames"
{
  "enemyDamage": {
    "enemy": "Ripper 2 (green)",
    "type": "contact",
    "hits": 1
  }
}
{
  "or": [
    "canHorizontalDamageBoost",
    {
      "and": [
        "HiJump",
        "canTrickyJump"
      ]
    }
  ]
}
{
  "or": [
    {
      "and": [
        "HiJump",
        "canWalljump"
      ]
    },
    "canTrickySpringBallJump"
  ]
}
{
  "heatFrames": 300
}

Dev note: FIXME: It is possible to avoid the Ripper and jump off of the crumble blocks. With a Spring Ball jump, this requires an very precise jump and very quick pause to get as much horizontal speed as possible before the second jump. With HiJump + Wall Jump, it is possible to crumble spin jump from the first crumbles to the second crumbles and then wall jump.