Requires:

"Grapple",
{"heatFrames": 420},
{"noFlashSuit": {}},
{"or": [
  "canDash",
  {"heatFrames": 30}
]}

Dev note: With a flash suit, swinging across with Grapple would require morphing/unmorphing; but if Morph is available, it's faster to just go through the morph tunnel.