12

Requires:

"canDash"
{
  "heatFrames": 440
}

Exit condition:

{
  "leaveWithDamage": {
    "enemy": "Gamet"
  }
}

Unlocks doors:

{"types":["missiles","powerbomb"],"requires":["never"]}
{"types":["super"],"requires":[]}

Dev note: FIXME: with Ice, this could be done dashless.