To break the bomb blocks with speedbooster without falling down, stand under the lower ceiling at the right and hold run before pressing forward. If it doesn't work, back up a little and try again.

Requires:

{
  "or": [
    {
      "and": [
        "h_getBlueSpeedMaxRunway",
        "canCarefulJump"
      ]
    },
    "h_canDestroyBombWalls",
    {
      "obstaclesCleared": [
        "A"
      ]
    }
  ]
}

Clears obstacles: A