This assumes you don't know you're entering this room, and take a Small Sidehopper hit quickly. The Small Sidehoppers may deliver more of the hits, but this is an assumed worst case scenario

Requires:

{
  "enemyDamage": {
    "enemy": "Sm. Sidehopper",
    "type": "contact",
    "hits": 1
  }
}
{
  "enemyDamage": {
    "enemy": "Sidehopper",
    "type": "contact",
    "hits": 3
  }
}

Clears obstacles: A