Unmorph a few tiles above the ground, and hold right to land on the platform aligning Samus with the top of the doorway. If needed, shoot the door open while falling, and hold jump to buffer the shinespark activation as soon as Samus lands.

Requires:

{
  "canShineCharge": {
    "usedTiles": 25,
    "openEnd": 1,
    "steepUpTiles": 3,
    "steepDownTiles": 3
  }
}
"Morph"
"canResetFallSpeed"
"canShinechargeMovementTricky"
{
  "shinespark": {
    "frames": 12,
    "excessFrames": 0
  }
}

Exit condition:

{
  "leaveWithSpark": {
    "position": "top"
  }
}

Unlocks doors:

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

Freeze the Choot when it swings right on its jump. Quickly get on top of it by first getting onto the pillar to the left, or with a SpringBall Jump. Perform a precise spring ball jump to get to the far right ledge, while avoiding hitting the water surface. While on the ledge, stand on the raised ground to the right and jump to the surface, then space jump across the water to the left.

Requires:

"canSuitlessMaridia"
"canTrickyUseFrozenEnemies"
"canTrickySpringBallJump"
{
  "or": [
    {
      "and": [
        "canResetFallSpeed",
        "canTrickyJump"
      ]
    },
    "canStationaryLateralMidAirMorph",
    "canSpringFling"
  ]
}
"canSpaceJumpWaterBounce"
"canWalljump"

Requires:

"canSuitlessMaridia"
{
  "or": [
    {
      "and": [
        "HiJump",
        "canSpringBallJumpMidAir"
      ]
    },
    {
      "and": [
        "HiJump",
        "canTrickyUseFrozenEnemies"
      ]
    },
    {
      "and": [
        "canTrickyUseFrozenEnemies",
        "canTrickySpringBallJump",
        {
          "or": [
            "canResetFallSpeed",
            "canStationaryLateralMidAirMorph",
            "canSpringFling"
          ]
        }
      ]
    }
  ]
}
{
  "useFlashSuit": {}
}
{
  "shinespark": {
    "frames": 11,
    "excessFrames": 5
  }
}

Jump into an IBJ while avoiding the Ripper, or start an IBJ from the platform to the left and boost horizontally at the top.

Requires:

{
  "or": [
    "canJumpIntoIBJ",
    {
      "and": [
        "canIBJ",
        "canBombHorizontally",
        "canResetFallSpeed"
      ]
    }
  ]
}

Bounce on the Power Bomb, then quickly kill the remaining Sidehopper with a strong beam, ammo, or pseudo-screw. If Samus has a weak beam, use the bomb to boost to the right to get the Sidehopper to jump to the right, then morph under it while killing it.

Entrance condition:

{
  "comeInJumping": {
    "speedBooster": "any",
    "minTiles": 0.4375
  }
}

Requires:

"canPrepareForNextRoom"
{
  "tech": "canJumpIntoIBJ"
}
"canResetFallSpeed"
"h_canUsePowerBombs"
"canHitbox"
{
  "or": [
    "canPseudoScrew",
    "Plasma",
    {
      "ammo": {
        "type": "Missile",
        "count": 2
      }
    },
    {
      "ammo": {
        "type": "Super",
        "count": 1
      }
    },
    {
      "and": [
        "Ice",
        "Wave"
      ]
    },
    {
      "and": [
        "Ice",
        "Spazer"
      ]
    },
    {
      "and": [
        "Wave",
        "Spazer"
      ]
    },
    {
      "and": [
        "canTrickyJump",
        {
          "tech": "canBombHorizontally"
        }
      ]
    }
  ]
}

While crossing the Spiky Lava, land on frozen Yapping Maws to reduce the number of spike hits needed. Damage boost towards then freeze the Leftmost enemy as it extends. Morph and unmorph while above the middle Yapping Maw to land on it just above the lava line. Ignore the rightmost Yapping Maw. Delay the damage boost from the spikes slightly in order to rise above the lava before moving.

Requires:

{
  "notable": "Frozen Maw Platforms"
}
"canResetFallSpeed"
"canTrickyUseFrozenEnemies"
"canTrickyJump"
{
  "or": [
    "canHorizontalDamageBoost",
    {
      "and": [
        {
          "spikeHits": 2
        },
        {
          "lavaFrames": 30
        },
        {
          "heatFrames": 240
        }
      ]
    }
  ]
}
"canIframeSpikeJump"
{
  "spikeHits": 2
}
{
  "lavaFrames": 15
}
{
  "heatFrames": 580
}

While crossing the Spiky Lava, land on frozen Yapping Maws to reduce the number of spike hits needed. Morph and unmorph while above the rightmost Yapping Maw to land on it just above the lava line. Ignore the second Yapping Maw. Freeze the Leftmost enemy as it extends. Delay the damage boost from the spikes slightly in order to rise above the lava before moving.

Requires:

{
  "notable": "Frozen Maw Platforms"
}
"canResetFallSpeed"
"canTrickyUseFrozenEnemies"
"canTrickyJump"
{
  "or": [
    "canHorizontalDamageBoost",
    {
      "and": [
        {
          "spikeHits": 1
        },
        {
          "lavaFrames": 20
        },
        {
          "heatFrames": 240
        }
      ]
    }
  ]
}
"canIframeSpikeJump"
{
  "spikeHits": 2
}
{
  "lavaFrames": 15
}
{
  "heatFrames": 580
}

Ride the Geruta left to reach the missile location by freezing it repeatedly. Stay on its left side when it touches the ceiling for the enemy to continue moving forward. It may not be possible to climb back up to the Geruta if Samus falls. When it moves towards the ceiling, reset Samus' fall speed using an unmorph or by taking knockback damage, in order to wait for the Geruta to fall low enough to refreeze.

Requires:

{
  "notable": "Ice Only Geruta Platforming"
}
"canTrickyUseFrozenEnemies"
"canCarefulJump"
{
  "or": [
    "canResetFallSpeed",
    {
      "and": [
        "canNeutralDamageBoost",
        {
          "enemyDamage": {
            "enemy": "Geruta",
            "type": "contact",
            "hits": 3
          }
        }
      ]
    }
  ]
}
{
  "heatFrames": 3000
}

Get to the top of the room with Spring Ball Bomb Jumps. To cross the room, perform a Spring Ball Bomb Jump after hitting the bomb with momentum to get a larger horizontal boost, then unmorph on the descent to reset fall speed.

Entrance condition:

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

Requires:

"h_canArtificialMorphSpringBallBombJump"
{
  "or": [
    "HiJump",
    {
      "and": [
        "canInsaneJump",
        "h_canArtificialMorphResetFallSpeed",
        {
          "ammo": {
            "type": "PowerBomb",
            "count": 3
          }
        }
      ]
    }
  ]
}

Requires:

{
  "or": [
    "Grapple",
    "SpaceJump",
    "canResetFallSpeed",
    {
      "and": [
        "canTrickyJump",
        "canLateralMidAirMorph"
      ]
    },
    {
      "and": [
        "Gravity",
        "canStaggeredWalljump"
      ]
    }
  ]
}

Resets obstacles: B

Requires:

{
  "obstaclesCleared": [
    "A"
  ]
}
{
  "doorUnlockedAtNode": 2
}
"canResetFallSpeed"
"canTrickyJump"
{
  "heatFrames": 145
}

Unlocks doors:

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

Requires:

{
  "obstaclesCleared": [
    "A"
  ]
}
{
  "doorUnlockedAtNode": 2
}
"canResetFallSpeed"
"Wave"
{
  "heatFrames": 200
}

Unlocks doors:

{"types":["ammo"],"requires":["never"]}

Dive into the acid to the left of the first floating platform to quickly sink to the bottom of the room. It is possible to jump directly over the pirate at the bottom of the ramp directly to the gap between platforms. Falling in this way will land between platforms at the bottom of the room unless Samus slows or catches herself on the way down.

Requires:

{
  "notable": "Reverse Acid Dive"
}
{
  "obstaclesNotCleared": [
    "A"
  ]
}
"canSuitlessLavaDive"
{
  "or": [
    "SpaceJump",
    "canTrickyJump",
    {
      "and": [
        "canLateralMidAirMorph",
        "canCarefulJump"
      ]
    },
    {
      "and": [
        "ScrewAttack",
        "canCarefulJump"
      ]
    },
    {
      "and": [
        "h_heatProof",
        {
          "enemyKill": {
            "enemies": [
              [
                "Yellow Space Pirate (standing)"
              ]
            ]
          }
        },
        "canCarefulJump"
      ]
    }
  ]
}
{
  "heatFrames": 140
}
{
  "or": [
    "canResetFallSpeed",
    "canPreciseWalljump",
    {
      "and": [
        {
          "heatFrames": 60
        },
        {
          "acidFrames": 60
        }
      ]
    }
  ]
}
{
  "heatFrames": 330
}
{
  "acidFrames": 330
}

Requires:

"canConsecutiveWalljump"
"canPreciseWalljump"
"canCarefulJump"
{
  "or": [
    "canTrickyJump",
    "canResetFallSpeed"
  ]
}

Cross the Pillar Room with Bombs and minimal damage. Some acid damage is expected, but any mistakes greatly increases the time spent in acid.

Entrance condition:

{
  "comeInRunning": {
    "minTiles": 1,
    "speedBooster": "any"
  }
}

Requires:

{
  "notable": "Bombs"
}
"h_canUseMorphBombs"
"canWallJumpInstantMorph"
"canInsaneJump"
"canResetFallSpeed"
"canUnmorphBombBoost"
"canSuitlessLavaDive"
{
  "heatFrames": 1320
}
{
  "acidFrames": 128
}

Unlocks doors:

{"types":["missiles","super"],"requires":[]}
{"types":["powerbomb"],"requires":[{"heatFrames":50},{"acidFrames":50}]}

Cross the Pillar Room with Bombs and minimal damage. Acid damage is expected, but any mistakes greatly increases the time spent in acid.

Entrance condition:

{
  "comeInRunning": {
    "minTiles": 1,
    "speedBooster": "any"
  }
}

Requires:

{
  "notable": "Bombs"
}
"h_canUseMorphBombs"
"Gravity"
"canResetFallSpeed"
"canJumpIntoIBJ"
"canSuitlessLavaDive"
{
  "enemyDamage": {
    "enemy": "Puromi",
    "type": "contact",
    "hits": 2
  }
}
{
  "heatFrames": 1440
}
{
  "acidFrames": 725
}

Unlocks doors:

{"types":["missiles"],"requires":[{"heatFrames":15},{"acidFrames":15}]}
{"types":["super"],"requires":[]}
{"types":["powerbomb"],"requires":[{"heatFrames":50},{"acidFrames":50}]}

Place the PBs next to the pillars in order to only use 2. Minimize acid by unmorphing high to land back on the jump spot or walljumping before placing the bomb.

Requires:

{
  "notable": "Two Power Bombs"
}
"canMidAirMorph"
"canCarefulJump"
{
  "ammo": {
    "type": "PowerBomb",
    "count": 2
  }
}
{
  "or": [
    {
      "and": [
        "canCarefulJump",
        "canResetFallSpeed",
        {
          "heatFrames": 660
        }
      ]
    },
    {
      "and": [
        "canWalljump",
        {
          "heatFrames": 660
        },
        {
          "or": [
            "canWallJumpInstantMorph",
            {
              "acidFrames": 30
            }
          ]
        }
      ]
    },
    {
      "and": [
        "Gravity",
        {
          "heatFrames": 660
        },
        {
          "acidFrames": 30
        }
      ]
    },
    {
      "and": [
        "canTrickyJump",
        "canSuitlessLavaDive",
        {
          "heatFrames": 720
        },
        {
          "acidFrames": 52
        }
      ]
    }
  ]
}
{
  "or": [
    "canTrickyJump",
    {
      "and": [
        "Gravity",
        {
          "heatFrames": 180
        },
        {
          "acidFrames": 56
        }
      ]
    },
    {
      "and": [
        "canSuitlessLavaDive",
        {
          "heatFrames": 240
        },
        {
          "acidFrames": 96
        }
      ]
    }
  ]
}
{
  "or": [
    "h_heatResistant",
    "canPauseAbuse",
    {
      "resourceCapacity": [
        {
          "type": "RegularEnergy",
          "count": 149
        }
      ]
    }
  ]
}

Unlocks doors:

{"types":["missiles"],"requires":[{"heatFrames":15},{"acidFrames":15}]}
{"types":["super"],"requires":[]}
{"types":["powerbomb"],"requires":[{"heatFrames":30},{"acidFrames":30}]}

Cross the Pillar Room with Bombs and minimal damage. Some acid damage is expected, but any mistakes greatly increases the time spent in acid.

Entrance condition:

{
  "comeInRunning": {
    "minTiles": 3,
    "speedBooster": "any"
  }
}

Requires:

{
  "notable": "Bombs"
}
"canWallJumpInstantMorph"
"canInsaneJump"
"canResetFallSpeed"
"canUnmorphBombBoost"
"canHBJ"
"canSuitlessLavaDive"
{
  "heatFrames": 1320
}
{
  "acidFrames": 128
}

Unlocks doors:

{"types":["missiles","super"],"requires":[]}
{"types":["powerbomb"],"requires":[{"heatFrames":50},{"acidFrames":50}]}

Cross the Pillar Room with Bombs and minimal damage. Acid damage is expected, but any mistakes greatly increases the time spent in acid.

Entrance condition:

{
  "comeInRunning": {
    "minTiles": 3,
    "speedBooster": "any"
  }
}

Requires:

{
  "notable": "Bombs"
}
"h_canUseMorphBombs"
"Gravity"
"canResetFallSpeed"
"canJumpIntoIBJ"
"canSuitlessLavaDive"
{
  "enemyDamage": {
    "enemy": "Puromi",
    "type": "contact",
    "hits": 2
  }
}
{
  "heatFrames": 1440
}
{
  "acidFrames": 725
}

Unlocks doors:

{"types":["missiles"],"requires":[{"heatFrames":15},{"acidFrames":15}]}
{"types":["super"],"requires":[]}
{"types":["powerbomb"],"requires":[{"heatFrames":50},{"acidFrames":50}]}

Deal an exact amount of damage to a wall pirate to freeze it while breaking the bomb blocks with a power bomb without taking damage. Wait briefly on the left side of the center platform, then jump and shoot 4 missiles at the top pirate. Walljump up the left wall such that the lower pirates are on screen long enough to jump accross to the left. Place a Bomb on the left wall to hit the top pirate when it jumps over, followed by a power bomb. Unmorph precisely below the middle pirate so both top pirates will jump back to the right, and begin charging Ice. Walljump up the left wall with charge held and freeze the top pirate when it jumps over and use it to reach the upper region.

Requires:

{
  "notable": "New Low Ice Pirate Freeze"
}
"canTrickyUseFrozenEnemies"
"Charge"
"canPreciseWalljump"
"canResetFallSpeed"
"canWalljumpWithCharge"
"h_canUseMorphBombs"
"canWallJumpInstantMorph"
{
  "ammo": {
    "type": "Missile",
    "count": 4
  }
}
{
  "ammo": {
    "type": "PowerBomb",
    "count": 1
  }
}
{
  "heatFrames": 900
}
{
  "or": [
    "h_heatResistant",
    {
      "and": [
        "canInsaneJump",
        "canPauseAbuse"
      ]
    },
    {
      "resourceCapacity": [
        {
          "type": "RegularEnergy",
          "count": 149
        }
      ]
    }
  ]
}

Clears obstacles: A

Morph Kago through the top Spike platform and use the I-Frames to Kago again through the second.

Requires:

"canKago"
"canResetFallSpeed"
{
  "enemyDamage": {
    "enemy": "Kzan",
    "type": "contact",
    "hits": 1
  }
}
{
  "heatFrames": 180
}

Morph and unmorph before reaching the transition, and then drift to the ledge. Enter the room as far right as possible.

Entrance condition:

{
  "comeInNormally": {},
  "comesThroughToilet": "no"
}

Requires:

{
  "notable": "Room Entry Reset Fall Speed"
}
"canSuitlessMaridia"
"canResetFallSpeed"
"canPrepareForNextRoom"

Reveal the item while jumping to the right wall and collect it as Samus falls past.

Requires:

"canDodgeWhileShooting"
"canCarefulJump"
{
  "or": [
    "Wave",
    "Spazer",
    {
      "and": [
        "canTrickyJump",
        "canDodgeWhileShooting",
        {
          "ammo": {
            "type": "Missile",
            "count": 5
          }
        }
      ]
    },
    {
      "and": [
        "canTrickyJump",
        "canResetFallSpeed",
        "canDownBack"
      ]
    },
    "canInsaneJump"
  ]
}

Requires:

"canSpringwall"
"canResetFallSpeed"

Requires:

"canSuitlessMaridia"
"canStationaryLateralMidAirMorph"
"canTrickySpringBallJump"
"canResetFallSpeed"

Requires a runway of at least 1 tiles in the adjacent room, although it is easier with more. Start the IBJ as far left as possible. The furthest right is just right of the waterfall. Turning around, carefully, is one way to lose forward momentum and begin the IBJ. At the top of the IBJ bomb to the left and unmorph to reset fall speed.

Entrance condition:

{
  "comeInJumping": {
    "speedBooster": false,
    "minTiles": 1
  }
}

Requires:

{
  "notable": "Cross Room Jump with IBJ"
}
"canJumpIntoIBJ"
"canBombHorizontally"
"canResetFallSpeed"
"canCrossRoomJumpIntoWater"
"canTrickyJump"

Requires:

"Gravity"
{
  "or": [
    "SpaceJump",
    "canHBJ",
    "canResetFallSpeed",
    {
      "enemyDamage": {
        "enemy": "Cacatac",
        "hits": 1,
        "type": "spike"
      }
    }
  ]
}
{
  "or": [
    "SpaceJump",
    "canWalljump",
    "HiJump",
    "canIBJ",
    "canHBJ",
    "canSpringBallBombJump",
    {
      "spikeHits": 1
    }
  ]
}

Break the shot block before reaching the sand and then shinespark up. Samus cannot shinespark after unmorphing until she touches the sand and this can be used to shoot upwards without sparking. A diagonal ShineSpark will most likely not have any horizontal movement when performed from the sand.

Entrance condition:

{
  "comeInShinecharged": {
    "framesRequired": 150
  },
  "comesThroughToilet": "any"
}

Requires:

"h_canNavigateUnderwater"
"canPlayInSand"
"canShinechargeMovementTricky"
{
  "or": [
    "canResetFallSpeed",
    {
      "and": [
        "canPrepareForNextRoom",
        "h_canUsePowerBombs"
      ]
    }
  ]
}
{
  "shinespark": {
    "frames": 24,
    "excessFrames": 5
  }
}

Roll off the above ledge and use both the vertical speed resets from first (un)equipping SpringBall and then by unmorphing in order to reach the door. Pause shortly after rolling off the ledge, after falling for 1 tile. The timing is very precise. A downback helps by shrinking Samus' hitbox.

Requires:

{
  "notable": "SpringFling into Top Right Door"
}
"canInsaneJump"
"canSpringFling"
"canResetFallSpeed"
"canDownBack"

Using movement tricks to reduce fall speed even slightly can avoid touching the sand. A Flatley style turnaround over the grapple block hole reduces fall speed some, but also needs a down back or a tiny jump.

Requires:

"canSuitlessMaridia"
{
  "or": [
    {
      "and": [
        "canFlatleyJump",
        {
          "or": [
            "canTrickyJump",
            "canDownBack"
          ]
        }
      ]
    },
    "canWalljump",
    "canResetFallSpeed"
  ]
}

Bomb Jump between the two floating platforms.

Requires:

{
  "or": [
    {
      "obstaclesCleared": [
        "A"
      ]
    },
    {
      "and": [
        "canCameraManip",
        "canMetroidAvoid"
      ]
    }
  ]
}
{
  "or": [
    {
      "and": [
        "canHBJ",
        "canResetFallSpeed"
      ]
    },
    {
      "and": [
        {
          "obstaclesCleared": [
            "A"
          ]
        },
        "canDiagonalBombJump"
      ]
    },
    "canCeilingBombJump"
  ]
}

1 2 3

Climbing the shaft with Space Jump is slower than other methods, so it is necessary to move quickly in order to minimize acid damage. With each Space Jump, release jump early rather than doing a full-height jump, in order to be able to Space Jump again more quickly. After reaching the top, fall down on the left side, keeping between the Pirates and the platforms. If Morph is available, use it to reset fall speed by unmorphing soon after taking damage from the bottom Pirate. With greater difficulty, the bottom Pirate can be avoided, resetting fall speed soon after getting past it. If Morph is not available, then take damage from the bottom Pirate, press against the left wall, and fire a carefully timed shot downward to open the door; in this case, use a down-back to fall directly into the doorway. If done quickly enough, it is possible to avoid any acid damage.

Requires:

{
  "notable": "Reverse Tourian Escape Room 4 Bootless Walljumpless Space Jump"
}
"canPreciseSpaceJump"
{
  "or": [
    {
      "and": [
        "canInsaneJump",
        "canResetFallSpeed"
      ]
    },
    {
      "and": [
        "canInsaneJump",
        "canDownBack",
        {
          "enemyDamage": {
            "enemy": "Tourian Space Pirate (all)",
            "type": "contact",
            "hits": 1
          }
        }
      ]
    },
    {
      "and": [
        "canResetFallSpeed",
        {
          "enemyDamage": {
            "enemy": "Tourian Space Pirate (all)",
            "type": "contact",
            "hits": 1
          }
        }
      ]
    }
  ]
}

Exit condition:

{
  "leaveNormally": {}
}

Unlocks doors:

{"types":["ammo"],"requires":["never"]}