Taking a rinka hit stops the Metroid damage for a while and is less damage.

Requires:

"canDash",
{"enemyDamage": {"enemy": "Rinka", "type": "contact", "hits": 1}},
{"metroidFrames": 256}

Exit condition:

"leaveNormally": {}

Unlocks doors:

{
  "types": ["missiles"],
  "requires": [
    {"metroidFrames": 50},
    {"ammo": {"type": "Missile", "count": 2}}
  ]
},
{
  "types": ["super"],
  "requires": [
    {"ammo": {"type": "Super", "count": 1}}
  ]
},
{"types": ["powerbomb"], "requires": []}

Dev note: Avoiding Rinkas is more difficult than getting hit, so it is not important to know to want to get hit. Opening a door with a Power Bomb is energy neutral since you can place it early.