Crystal Flash after getting past the Metarees, or else run through the bomb wall and farm Reos and Zeelas. Leave one Reo or Zeela alive. Build a Shinespark then get hit by the remaining enemy to interrupt.

Entrance condition:

"comeInWithRMode": {}

Requires:

{"or": [
  "h_CrystalFlashForReserveEnergy",
  {"and": [
    "h_RModeCanRefillReserves",
    {"resourceMissingAtMost": [{"type": "Missile", "count": 0}]},
    {"partialRefill": {"type": "ReserveEnergy", "limit": 20}}
  ]}
]},
"h_shinechargeMaxRunway",
{"autoReserveTrigger": {}},
"canRModeSparkInterrupt"

Clears obstacles: A