canDownBack- Super Metroid Map Rando

canDownBack (Very Hard)

Holding the direction buttons down and then also backwards in order to move forwards, while in the correct falling state.

Strats ()

Shinespark Down Back (Very Hard)
Green Hill Zone

From: 1
Top Left Door

To: 5
Junction The Left End of Morph Tube

Spark flush against the right wall (diagonal helps) then quickly down back to barely get into the pipe.

Requires:

"canDownBack"
"canShinechargeMovementComplex"
{
  "canShineCharge": {
    "usedTiles": 18,
    "openEnd": 1
  }
}
{
  "shinespark": {
    "frames": 15
  }
}

Use Flash Suit, Shinespark Down Back (Ignored)
Green Hill Zone

From: 1
Top Left Door

To: 5
Junction The Left End of Morph Tube

excessFrames don't matter much here, as Samus can farm before and after.

Requires:

"canDownBack"
{
  "useFlashSuit": {}
}
{
  "shinespark": {
    "frames": 3,
    "excessFrames": 0
  }
}

Carry Shinecharge (Down-back) (Expert)
Kraid Eye Door Room

From: 2
Top Right Door

To: 1
Left Door

Entrance condition:

{
  "comeInShinecharged": {
    "framesRequired": 115
  }
}

Requires:

"canDownBack"
"canShinechargeMovementTricky"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": "auto"
  }
}

Unlocks doors:

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

Carry Shinecharge (Sova Kill) (Very Hard)
Business Center

From: 1
Top Left Door

To: 2
Middle Left Door

Entrance condition:

{
  "comeInShinecharged": {
    "framesRequired": 125
  }
}

Requires:

{
  "or": [
    {
      "enemyKill": {
        "enemies": [
          [
            "Sova"
          ]
        ],
        "explicitWeapons": [
          "ScrewAttack",
          "Wave",
          "Spazer",
          "Plasma",
          "Missile",
          "Super"
        ]
      }
    },
    {
      "and": [
        {
          "enemyKill": {
            "enemies": [
              [
                "Sova"
              ]
            ],
            "explicitWeapons": [
              "PowerBeam"
            ]
          }
        },
        "canDownBack"
      ]
    }
  ]
}
"canShinechargeMovementComplex"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": "auto"
  }
}

Unlocks doors:

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

Come in Shinecharging, Leave Shinecharged (Very Hard)
Business Center

From: 1
Top Left Door

To: 2
Middle Left Door

Entrance condition:

{
  "comeInShinecharging": {
    "length": 4,
    "openEnd": 1,
    "gentleDownTiles": 2
  }
}

Requires:

"canShinechargeMovementComplex"
{
  "or": [
    "canDownBack",
    {
      "enemyDamage": {
        "enemy": "Sova",
        "type": "contact",
        "hits": 1
      }
    }
  ]
}

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": 85
  }
}

Unlocks doors:

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

Come in Shinecharging, Leave Shinecharged (Expert)
Business Center

From: 1
Top Left Door

To: 3
Bottom Left Door

Entrance condition:

{
  "comeInShinecharging": {
    "length": 4,
    "openEnd": 1,
    "gentleDownTiles": 2
  }
}

Requires:

"canShinechargeMovementTricky"
"canDownBack"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": 30
  }
}

Unlocks doors:

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

Come in Shinecharging, Leave Shinecharged (Very Hard)
Business Center

From: 3
Bottom Left Door

To: 4
Bottom Right Door

Fall around the floating platform with either a Downback or by jumping down with a Spinjump.

Entrance condition:

{
  "comeInShinecharging": {
    "length": 12,
    "openEnd": 0
  }
}

Requires:

"canShinechargeMovementComplex"
"canDownBack"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": 30
  }
}

Unlocks doors:

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

Come in Shinecharging, Leave Shinecharged (Half Runway) (Very Hard)
Business Center

From: 3
Bottom Left Door

To: 4
Bottom Right Door

Fall around the floating platform with either a Downback or by jumping down with a Spinjump.

Entrance condition:

{
  "comeInShinecharging": {
    "length": 6,
    "openEnd": 0
  }
}

Requires:

"canShinechargeMovementComplex"
"canDownBack"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": 60
  }
}

Unlocks doors:

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

Carry Shinecharge (Very Hard)
Business Center

From: 5
Middle Right Door

To: 4
Bottom Right Door

Fall around the floating platform with either a Downback or by jumping down with a Spinjump.

Entrance condition:

{
  "comeInShinecharged": {
    "framesRequired": 135
  }
}

Requires:

"canShinechargeMovementComplex"
"canDownBack"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": "auto"
  }
}

Unlocks doors:

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

Come In Shinecharging, Leave Shinecharged (Very Hard)
Business Center

From: 5
Middle Right Door

To: 4
Bottom Right Door

Fall around the floating platform with either a Downback or by jumping down with a Spinjump.

Entrance condition:

{
  "comeInShinecharging": {
    "length": 12,
    "openEnd": 0
  }
}

Requires:

"canShinechargeMovementComplex"
"canDownBack"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": 30
  }
}

Unlocks doors:

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

Come in Shinecharging, Leave Shinecharged (Short Runway) (Very Hard)
Business Center

From: 5
Middle Right Door

To: 4
Bottom Right Door

Fall around the floating platform with either a Downback or by jumping down with a Spinjump.

Entrance condition:

{
  "comeInShinecharging": {
    "length": 4,
    "openEnd": 1
  }
}

Requires:

"canShinechargeMovementComplex"
"canDownBack"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": 60
  }
}

Unlocks doors:

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

Come in Shinecharging, Leave Shinecharged (Sova Evade) (Expert)
Business Center

From: 6
Top Right Door

To: 2
Middle Left Door

Shoot the top Sova while falling to delay its movement.

Entrance condition:

{
  "comeInShinecharging": {
    "length": 3,
    "openEnd": 0
  }
}

Requires:

"canShinechargeMovementTricky"
"canDownBack"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": 70
  }
}

Unlocks doors:

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

Carry Shinecharge (Very Hard)
Business Center

From: 7
Elevator

To: 6
Top Right Door

Entrance condition:

{
  "comeInShinecharged": {
    "framesRequired": 140
  }
}

Requires:

"canShinechargeMovementComplex"
"canDownBack"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": "auto"
  }
}

Unlocks doors:

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

Leave Shinecharged (Insane)
Business Center

From: 8
Main Junction

To: 4
Bottom Right Door

Fall around the floating platform with either a Downback or by jumping down with a Spinjump.

Requires:

{
  "or": [
    {
      "and": [
        {
          "doorUnlockedAtNode": 3
        },
        {
          "doorUnlockedAtNode": 5
        },
        {
          "canShineCharge": {
            "usedTiles": 14,
            "openEnd": 0
          }
        }
      ]
    },
    {
      "and": [
        {
          "or": [
            {
              "doorUnlockedAtNode": 3
            },
            {
              "doorUnlockedAtNode": 5
            }
          ]
        },
        {
          "canShineCharge": {
            "usedTiles": 13,
            "openEnd": 0
          }
        }
      ]
    },
    {
      "canShineCharge": {
        "usedTiles": 12,
        "openEnd": 0
      }
    }
  ]
}
"canShinechargeMovementComplex"
"canDownBack"

Exit condition:

{
  "leaveShinecharged": {
    "framesRemaining": 30
  }
}

Unlocks doors:

{"nodeId":3,"types":["ammo"],"requires":[]}
{"nodeId":4,"types":["ammo"],"requires":[]}
{"nodeId":5,"types":["ammo"],"requires":[]}

Wall Pocket Acid Dive (Very Hard)
Acid Statue Room

From: 1
Top Right Door

To: 3
Acid Chozo Statue

There is a hole in the left side wall that Samus can fit into by shrinking her hitbox. Once in the wall, stand up if crouched then turnaround into a buffered spinjump to jump out of the acid.

Requires:

{
  "tech": "canPartialFloorClip"
}
"canSuitlessLavaDive"
{
  "or": [
    {
      "and": [
        "canLateralMidAirMorph",
        "canDownBack",
        "canTrickyJump",
        {
          "acidFrames": 108
        }
      ]
    },
    {
      "and": [
        "canTrickyJump",
        {
          "heatFrames": 30
        },
        {
          "acidFrames": 136
        }
      ]
    },
    {
      "and": [
        {
          "heatFrames": 90
        },
        {
          "acidFrames": 216
        }
      ]
    }
  ]
}
{
  "heatFrames": 285
}

Weave (Medium)
Lower Norfair Spring Ball Maze Room

From: 1
Left Door

To: 7
Junction By Lower Alcoons (Left of Spike Pits)

Requires:

"h_canNavigateHeatRooms"
{
  "or": [
    "canDownBack",
    "canCarefulJump"
  ]
}
{
  "heatFrames": 120
}

Weave (Medium)
Lower Norfair Spring Ball Maze Room

From: 6
Junction By Left Door (Right of Pit)

To: 7
Junction By Lower Alcoons (Left of Spike Pits)

Requires:

"h_canNavigateHeatRooms"
{
  "or": [
    "canDownBack",
    "canCarefulJump"
  ]
}
{
  "heatFrames": 120
}

Fast Descent (Very Hard)
Red Kihunter Shaft

From: 1
Top Left Door

To: 7
Junction At Middle Right Door With Bottom KiHunter Cleared

By breaking the shot blocks and maneuvering through the room effeciently Samus will not have to spend much time waiting on KiHunters.

Entrance condition:

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

Requires:

"canDodgeWhileShooting"
"canCarefulJump"
{
  "or": [
    "canTrickyJump",
    "canDownBack"
  ]
}
{
  "or": [
    "Charge",
    "Spazer",
    "Plasma",
    "Wave",
    "canInsaneJump"
  ]
}
{
  "heatFrames": 540
}

Fast Descent (Very Hard)
Red Kihunter Shaft

From: 4
Top Right Door

To: 7
Junction At Middle Right Door With Bottom KiHunter Cleared

By breaking the shot blocks and maneuvering through the room effeciently Samus will not have to spend much time waiting on KiHunters.

Entrance condition:

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

Requires:

"canDodgeWhileShooting"
"canTrickyJump"
{
  "or": [
    "Charge",
    "Spazer",
    "Plasma",
    "Wave",
    {
      "and": [
        "canInsaneJump",
        {
          "or": [
            "canDownBack",
            "Morph"
          ]
        }
      ]
    }
  ]
}
{
  "heatFrames": 540
}

Jump the KiHunter (Extreme)
Red Kihunter Shaft

From: 5
Top Junction Between Doors

To: 7
Junction At Middle Right Door With Bottom KiHunter Cleared

Very quickly move through the room to meet the bottom KiHunter in a position where it is possible to jump over it. Down back through the shot blocks. If coming through the right door, Morphing may be easier. Jump over the KiHunter where it dips while moving left. Additionally, build full run speed before jumping to land all the way next to the door.

Requires:

"canInsaneJump"
"canDodgeWhileShooting"
"canPrepareForNextRoom"
{
  "or": [
    "Charge",
    "Spazer",
    "Plasma",
    "Wave"
  ]
}
"canDownBack"
{
  "heatFrames": 420
}

Plasma Run Through Enemies (Hard)
Red Kihunter Shaft

From: 5
Top Junction Between Doors

To: 7
Junction At Middle Right Door With Bottom KiHunter Cleared

Use Plasma to run through Kihunters instead of waiting.

Requires:

"h_canNavigateHeatRooms"
"canHitbox"
"Plasma"
{
  "or": [
    "canDownBack",
    {
      "and": [
        "canCarefulJump",
        {
          "heatFrames": 50
        }
      ]
    },
    {
      "heatFrames": 130
    }
  ]
}
{
  "heatFrames": 410
}

Quick Pirate Avoid (Very Hard)
The Worst Room In The Game

From: 1
Top Left Door

To: 5
Junction Below Top Pirate

It is possible to get past the pirate without waiting by moving fast enough, or by making it turn around. Landing on the floating platform will make the fall simpler without scrolling the camera enough to activate the pirate.

Requires:

{
  "or": [
    {
      "and": [
        "canInsaneJump",
        {
          "heatFrames": 110
        },
        {
          "or": [
            "canDownBack",
            "Morph",
            {
              "heatFrames": 40
            }
          ]
        }
      ]
    },
    {
      "and": [
        "canTrickyJump",
        {
          "heatFrames": 145
        },
        {
          "or": [
            "canDownBack",
            "Morph",
            {
              "heatFrames": 40
            }
          ]
        }
      ]
    }
  ]
}

Reveal Item while Jumping (Hard)
Mama Turtle Room

From: 4
On Mama Turtle

To: 3
Hidden Right Item

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

Requires:

"canDodgeWhileShooting"
"canCarefulJump"
{
  "notable": "Shoot Down and Grab Right Item"
}
{
  "or": [
    "Wave",
    "Spazer",
    "h_canUsePowerBombs",
    {
      "and": [
        "canTrickyJump",
        "canDodgeWhileShooting",
        {
          "ammo": {
            "type": "Missile",
            "count": 5
          }
        }
      ]
    },
    {
      "and": [
        "canTrickyJump",
        "canResetFallSpeed",
        "canDownBack"
      ]
    },
    "canInsaneJump"
  ]
}

SpringFling into Top Right Door (Insane)
Plasma Spark Room

From: 5
Top Junction

To: 4
Top Right Door

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"

Avoid Sand (Medium)
Pants Room

From: 5
Junction Above Grapple Block

To: 1
West Leg Left Door

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"
  ]
}

Ice Zebetite Skip (Hard)
Mother Brain Room

From: 2
Right Door

To: 3
Mother Brain

1 2 3

Glitch through the Mother Brain Zebetites by using a frozen Rinka and i-frames. Freeze the Rinka at its spawn location, then spin jump or down-back onto it after acquiring i-frames to clip inside of the Zebetite, then jump through. I-frames can be acquired from a Rinka hit, a turret shot, or from the Zebetite itself. Note that Zebetites cause i-frames but deal no damage. If Screw Attack is equipped, then a down-back must be used, since spin jumping will cancel i-frames. With Ice+Wave, Samus can freeze the Rinka from above with an angle-down shot; Otherwise Samus must go below, press against the wall, and freeze it with an upward shot. With Ice+Plasma, Samus must be crouched when firing the shot.

Requires:

{
  "notable": "Ice Zebetite Skip"
}
"canTrickyUseFrozenEnemies"
"Morph"
{
  "or": [
    {
      "and": [
        "Wave",
        {
          "enemyDamage": {
            "enemy": "Rinka",
            "type": "contact",
            "hits": 1
          }
        }
      ]
    },
    "canTrickyJump"
  ]
}
{
  "or": [
    {
      "disableEquipment": "ScrewAttack"
    },
    "canDownBack"
  ]
}
{
  "or": [
    "canTrickyDodgeEnemies",
    {
      "enemyDamage": {
        "enemy": "Mother Brain 1",
        "type": "turret",
        "hits": 1
      }
    }
  ]
}
"i_Objective1Complete"
"i_Objective2Complete"
"i_Objective3Complete"
"i_Objective4Complete"

Reverse Bootless Walljumpless Space Jump (Left-Side Fall) (Expert)
Tourian Escape Room 4

From: 3
Bottom of Shaft

To: 1
Left Door

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 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"]}