Climbing the room and remaining at the top has a very high risk of getting hit by a Waver. Quickly move to the right and exit G-mode to fix the camera. It is possible to kill the Wavers off-screen with one or two Power Bombs or a blue suit; Screw Attack is also relatively safe. With Morph alone, it is possible to cross but requires some luck.

Entrance condition:

"comeInWithGMode": {
  "mode": "any",
  "morphed": false
}

Requires:

"canOffScreenMovement",
"canComplexGMode",
{"or": [
  "canWallJump",
  "SpaceJump",
  {"and": [
    "HiJump",
    "canTrickyUseFrozenEnemies"
  ]},
  {"and": [
    "HiJump",
    "canSpringBallJumpMidAir"
  ]},
  {"and": [
    {"blueSuitShinecharge": {}},
    {"or": [
      {"shinespark": {"frames": 13, "excessFrames": 4}},
      {"and": [
        "HiJump",
        {"shinespark": {"frames": 9, "excessFrames": 4}}
      ]}
    ]}
  ]}
]},
{"or": [
  "ScrewAttack",
  "h_usePowerBomb",
  {"and": [
    "canBeLucky",
    "Morph"
  ]},
  {"haveBlueSuit": {}},
  {"enemyDamage": {"enemy": "Waver", "type": "contact", "hits": 1}}
]}