Ride the Tripper across to the center platform, then farm it for energy. Enter X-Mode on the spike and shinecharge, then use heat damage to interrupt. Ride the second tripper to the opposite door - farm it on the way out if needed.

Entrance condition:

"comeInWithRMode": {}

Requires:

"h_heatProof",
"Morph",
"h_RModeCanRefillReserves",
{"enemyKill": {
  "enemies": [["Tripper"]]
}},
{"resourceMissingAtMost": [{"type": "Missile", "count": 0}]},
{"or": [
  {"partialRefill": {"type": "ReserveEnergy", "limit": 5}},
  {"and": [
    {"or": [
      "h_lavaProof",
      "Grapple",
      {"and": [
        "canWallJump",
        {"or": [
          "Super",
          "Ice"
        ]}
      ]},
      "SpaceJump"
    ]},
    {"partialRefill": {"type": "ReserveEnergy", "limit": 20}},
    {"or": [
      {"enemyKill": {
        "enemies": [["Tripper"]]
      }},
      "canBeLucky"
    ]}
  ]}
]},
"canBeVeryPatient",
"canXMode",
"h_XModeSpikeHit",
"h_shinechargeMaxRunway",
{"disableEquipment": "Varia"},
{"disableEquipment": "Gravity"},
{"autoReserveTrigger": {}},
"canRModePauseAbuseSparkInterrupt"

Exit condition:

"leaveNormally": {}

Unlocks doors:

{"nodeId": 2, "types": ["ammo"], "requires": []}