All credit here goes to Switch2795 for this route, I only made a few optimizations for my attempts. This assumes you have prior knowledge of a general Crystal Glitchless run. Pastebin version -> https://pastebin.com/rV9R11sq

GAME START

• Stats 12/15/15/15, Right Ball
• Set options (OFF/FAST/SET)
• 10am, 1-letter name for the Player

NEW BARK TOWN

• Mom conversation: Sunday, no DST, yes phone
• Head to Elm's lab
• Pick Scyther, nickname it 'A'

ROUTE 29

• Repel

ROUTE 30

• Repel
• Free heal from Mr. Pokemon
• Grab Berry on the way back

CHERRYGROVE CITY

• Rival 1: Leer first then QA spam
• Afterward, return to Elm's Lab to name the Rival and get Balls

TO VIOLET

• Say No to the guy who wants to show you how to catch
• Catch Sentret
• Repel after Sentret catch
• Pick up Antidote
• Youngster: QA x2 Pidgey, QA x3 Rattata
• When Mom calls, say No
• Grab Potion
• Grab Bitter Berry
• Head to Sprout Tower

SPROUT TOWER

• Nico: QA x6
• Pick up Parlyz Heal
• Chow: QA x6
• Pick up X Accuracy
• Edmond: QA x6
• Jin: QA x2-3
• Neal: QA x2-3
• Mash through cutscene, use Escape Rope
• Heal at Center, then head to Gym

VIOLET GYM

Make sure Berry is still equipped

• Bird Keeper Abe: QA x3 Spearow
• Bird Keeper Rod: QA x2 Pidgey x2
• Use Potion, and Equip Berry
• Falkner: QA x2-3 Pidgey, QA x4 Pidgeotto

VIOLET CITY/ROUTE 32/UNION CAVE

• Go to Mart, Sell Mud Slap, Buy 8 X Attack, 1 X Defend
• Go to Center, talk to scientist for Egg
• (pick up przcureberry)
• Repel
• Get Repel in grass
• Enter Union Cave
• Use Repel 4-5 Steps in
• Grab X Attack
• Skip Russell
• Skip Bill
• Grab Potion
• Go to BF1 and pick up TM39 (Swift)
• Teach Swift
• Larry: Swift x3

Teach Pursuit over Focus Energy

• Avoid Anthony

AZALEA TOWN/SLOWPOKE WELL

• Talk to Kurt in upper left house, then go to Slowpoke Well
• Go to Slowpoke Well, pick up Full Heal;
• Grunt #1: QA x2 Rattata x2
• Heal if at low health
• Grunt #2: Swift x2 Zubat, Swift x2 Ekans
• Use Antidote + Potion if needed
• Pick up Super Potion
• Grunt #3: Swift Rattata, Swift Zubat, Swift Zubat

Zubat is 66% range, finish with QA Use Potion if at low health

• Grunt #4: Swift x4 Koffing
• After cutscene, walk to Gym

AZALEA GYM

Finish Ranges with QA

• Amy & May: Swift Spinarak(23% Range), Swift Ledyba
• Josh: Swift x2 Paras
• Benny: QA Weedle, QA x2 Kakuna, Swift x2 Beedrill
• Bugsy: X Attack, Swift, QA Metapod, QA x2 Kakuna, Swift x3 Scyther

AZALEA TOWN/ILEX FOREST

• Go to Mart, Buy 7 Escape Rope, 7 Repel
• Heal one tile before Rival if needed, use Repel, Teach Fury Cutter over Leer
• Rival 2: X Attack, Pursuit x2 Gastly, Swift x2 Quilava, Swift Zubat(89% Range)
• Chase Farfetch'd using the top path, not the right (Revive) path
• Get Cut, use Repel, teach Cut to Sentret, cut tree from the field
• Grab hidden Full Heal
• Grab X Attack
• Leave forest, avoid trainers, head to Goldenrod
• Go to Bike Shop in Goldenrod

GOLDENROD CITY/SPINNER HELL

• Leave Bike Shop, register Bicycle and use

• Grab Kenya in guard house

• PC Heal and deposit egg at National Park

• Bike through National Park

• Talk to Floria, then head back to Goldenrod, head to Gym

GOLDENROD GYM

• Carrie: Swift x3 Snubbull
• Heal to full before Whitney
• Save before this fight (optional)
• (use x accuracy for fury cutter)
• Whitney: Fury Cutter x3 Clefairy, Fury Cutter x2 Miltank

You will outspeed Miltank

• Go to Flower Shop, talk to blue girl then red girl for Squirtbottle

EARLY UNDERGROUND/ GAME CORNER

• Go to underground early and fight Donald and Teru
• Donald: QA x2 Slowpoke x2
• Teru: Swift lv7 Magnemite x2, Swift Voltorb, QA x2 lv9 Magnemite

Magnemite is 82% Range at lv19

• Grab Coin Case
• Use Escape Rope, then head to Game Corner
• Buy 100 coins
• Buy Abra
• Teleport back to Violet
• Head West to Route 36

Route 36

• Use Squirtbottle on Sudo, then run
• [Greg]: Swift x3 Drowzee
• Bike to Center, mash through Bill Cutscene, PC heal and deposit Egg
• Head to Route 42

EARLY HIDDEN POWER

• Switch Scyther to front, and Repel when entering Mt Mortar

• Continue to Mahogany, then head north to Route 43 to Lake of Rage

• Pick up Full Restore

• Pick up Rare Candy in Maze (top left side)

• Get Hidden Power from House, Teach Hidden Power over QA

• Teleport back to Ecruteak, then head to Burnt Tower

KIMONO GIRLS/BURNT TOWER

• Mash through Eusine cutscene, Repel, walk to center of floor and fight Rival 3

• Rival 3: X Attack, HP Haunter, HP Magnemite, HP Quilava, Swift Zubat(48% Range, finish with Pursuit)

• Use Escape Rope after the cutscene, grab hidden Hyper Potion, then bike to Kimono

• Naoko: HP Flareon

• Sayo: Fury Cutter x2 Espeon

• Zuki: Fury Cutter x3 Umbreon

• Kuni: Swift x2-3 Vaporeon

• Miki: HP Jolteon

• Get Surf from old man, then exit building

• Head to gym

ECRUTEAK GYM

• Ping: Pursuit Gastly x5

First Gastly is a 64% Range, the rest are 89%

• Avoid second trainer by walking right twice, up twice, left to third trainer's vision
• Jeffrey: HP Haunter
• Medium Martha: Pursuit Gastly(48% Range), HP Haunter, HP Gastly
• Morty: X Attack, HP Gastly, HP Haunter, HP Gengar, HP Haunter
• Exit gym and bike through Route 38 and Route 39 to Olivine City

ROUTE 38/ROUTE 39

• Take the bottom path and use a Repel during a pause buffer
• Ruth: Swift Pikachu

OLIVINE CITY/LIGHTHOUSE 1

• Bike to the Mart

Buy 14 Super Repels, 3 Super Potions

• Bike to Lighthouse,
• Alfred: Swift x2 Noctowl
• Preston: Swift Growlithe x2 (82% Range, finish with Pursuit)
• Connie: Swift x2 Marill
• Drop from the left
• Talk to Jasmine, then drop to the right for Rare Candy, teach Surf to Sentret, Super Repel, then Escape Rope
• Go to the Cafe left of the Center, grab Strength
• Use Bicycle, Surf to Cianwood
• Grab Shuckie
• Bike to Gym

CIANWOOD GYM

• Yoshi: Swift x2-3 Hitmonlee
• Lao: Swift x3 Hitmonchan
• Heal, use 2 Rare Candies, teach Strength to Shuckie
• Teach Wing Attack over Pursuit
• Nob: WA Machop, WA Machoke
• Lung: Swift Mankey x2, WA Primeape
• Use Super Potion to heal if needed
• Chuck: X Attack, WA Primeape, WA Poliwrath

CIANWOOD CITY/SHINY GYARADOS SEQUENCE

• Get Fly from Chuck’s wife outside Gym
• Get Secretpotion from house next to Chuck's wife
• Teach Fly to Kenya, Fly to Lake of Rage(1 down)
• Catch Shiny Gyarados, talk to Lance, Fly to Mahogony (2 down)

ROCKET HIDEOUT

• Enter Team Rocket Hideout, mash through cutscene
• Grunt #1: WA x2
• Grunt #2: WA x3
• Jed: HP Magnemite x3
• Activate switch on computer then head downstairs and talk to Lance
• Grunt #3: Swift Venonat x2
• Grunt #4: Swift Ekans, WA Gloom; talk after for password
• Grunt #5: Swift Raticate; talk after for password
• Head up the stairs in the upper right hand corner
• Take the stairs down, ignore the second staircase, head to door, mash through cutscenes
• Executive #1: Swift Zubat, WA Raticate, WA Koffing; talk to Murkrow after
• Head back to the room where you acquired the first two passwords
• Take the stairs that lead back to the Lance heal, pick up Full Heal in the way
• Open the door and mash through cutscene
• Executive #2: WA Arbok(82% Range), WA Gloom, WA Murkrow
• Knock out the three Electrodes HP x3
• Mash through Lance cutscene, then Escape Rope

MAHOGANY GYM

• Ice puzzle: left of statue, Up, Up, Right, Down, Left, Up, Right
• Pryce: X Attack x2, Swift Seel, WA Dewgong, WA Piloswine (25% Range, finish with swift)
• Ice puzzle: Left, Down, Left, Down, exit gym, Fly to Olivine

OLIVINE LIGHTHOUSE 2/GYM

• Bike to the Lighthouse, go through it like normal
• Give SecretPotion to Jasmine, Escape Rope out, bike to gym
• (save for jasmine)(one of the worst fights for scyther)
• Jasmine: HP Magnemite x2, X Defend, X Attack x2, HP x2 Steelix

Rock Throw is 3HO with X Defend, set up and heal when needed

• Exit gym, Fly to Goldenrod (4 up)

GOLDENROD MART

-5F: Grab Return -3F: (also buy 1 more X Attack and 3 more X Accuracy) (can buy one x acc if you want to be super yolo and only use it on Karen)

RADIO TOWER 1

• Bike to Radio Tower
• Grunt #1: WA Raticate x2

Teach Slash over Swift

• Head upstairs and walk into trainer's vision
• Grunt #2: WA Arbok(47% range, finish with Slash)
• Ignore lower trainer, walk to upper trainer
• Grunt #3: Slash Zubat x2
• Grunt #4: Slash Grimer x2, HP Muk
• Head upstairs and talk to upper trainer
• Grunt #5: WA Koffing, Slash Grimer, Slash Zubat, Slash Rattata
• Marc HP Magnemite x3
• Head upstairs, avoid rotator
• Rich: Slash x2 Porygon
• Head upstairs
• Executive #1: X Attack, WA Koffing x3, HP Weezing(92% Range), WA Koffing, WA Koffing
• (may need to use a X Accuracy if Koffing uses Smokescreen)
• Leave Radio Tower and bike to the Underground

UNDERGROUND

• Walk to the right of Teru and use the key on the door, then head downstairs
• Heal, then teach Return over Fury Cutter
• Rival 4: X Attack, WA Golbat, HP Magnemite, WA Haunter, Slash Sneasel, WA Quilava
• Grunt #1: Slash Rattata
• Grunt #2: WA Muk, Slash Koffing, Slash Rattata
• Grunt #3: Return Koffing, Return Muk
• Hit the switches in this order: 3, 2, 1
• Eddie: Slash Growlithe, WA Koffing
• Duncan: Slash Koffing, Slash Magmar, Slash Koffing
• Grunt #4: Return Gloom x2
• Grunt #5: Slash Raticate, Slash Golbat
• Grunt #6: Return Grimer, Return Weezing
• Teach Swords Dance over Slash
• Grunt #7: WA Koffing x2
• Get Card Key from Director, Escape Rope out

RADIO TOWER 2

• Use Card Key on 3rd Floor
• Grunt: WA Raticate, WA Koffing
• Executive #1: WA x2 Golbat
• Executive #2: HP Arbok, WA Vileplume, WA Murkrow
• Executive #3: WA Houndour, HP Koffing, HP Houndoom
• Mash through cutscene, Pick up Pink Bow, head to lobby
• Take Radio Card Quiz: Y, Y, N, Y, N
• Leave Radio Tower
• Fly to Mahogany

ROUTE 44/ICE PATH/BLACKTHORN CITY

• Bike east, take lower path
• Give Scyther Pink Bow, and use a Super Repel upon entering Ice Path
• Ice Puzzle #1: L, U, L, D, L, U, L, D, R, D, R
• Ice Puzzle #2: R, U, L, D, R, HM07, L, U, R, D, R, U, R, D, L, D, L
• Use a Super Repel when needed
• Strength Puzzle: Push top boulder into hole, fall down second hole, U,
• Ice Puzzle #3: D, R, D, L, U, L
• Exit Ice Path
• Head to the Gym

BLACKTHORN GYM

• Paul: WA Dratini x3
• Fran: SD, WA Seadra
• Cody: SD, Return Horsea, Return Seadra
• Lola: Return Dratini, Return Dragonair(94% Range)
• Clair: SD, Return Dragonair x3, Return Kingdra
• Super Repel, Teach Whirlpool and Waterfall to Gyarados, Leave gym, Surf to Dragon's Den

DRAGON'S DEN

• Daren: Return Dragonair
• Surf to the Dragon Shrine
• Test: 1, 1, 2, 1, 2
• Mash through cutscenes, then Escape Rope out
• Mash through phone call, Fly to New Bark Town

TOHJO FALLS/VICTORY ROAD

• Go east and Surf, going through Tohjo Falls

When exiting cave, move down two and bonk into the tree, then pass rotator

• Bike east and north, avoiding trainers along the way, and grab the free heal

When leaving house, walk to Joyce, mount bike to buffer first time

• Beth: HP Rapidash
• Super Repel, navigate Victory Road
• Rival 5: SD, WA Sneasal, WA Golbat, HP Magneton, WA Haunter, WA Kadabra, WA Typhlosion

ELITE FOUR

• Buy 11 Full Restores
• Will: SD x2, WA Xatu, WA Jynx, WA Exeggutor, WA Slowbro, WA Xatu
• Koga: SD, Return Ariados, Return Venomoth, WA x2 Forretress, Return Muk, Return Crobat
• (use X Accuracy unless you want to YOLO through Double Team)
• Bruno: SD, Return Hitmontop, Return Hitmonlee, Return Hitmonchan, Return Machamp, HP Onix
• Karen: SD, X Accuracy, Heal with Full Restore if Confused, Return Umbreon(82% Range), Return Vilepume, WA Gengar, Return Murkrow, Return Houndoom

If Umbreon doesn't hit Sand Attack, skip X Accuracy

• Heal to full health
• Lance: SD x2, Return Gyarados, Return Dragonite x2, Return Aerodactyl, Return Charizard, Return Dragonite
• Reset after game save during Hall of Fame

SS AQUA

• Bike to Professor Elm and get the S.S. Ticket
• Fly to Olivine (5 down), get on the boat
• Go right and down the stairs, talk to guy blocking you, go back upstairs
• Go in 3rd room on the top from the left
• Stanley: All Return
• Go back downstairs, and head left to the Captain
• Leave the ship, Fly to Vermillion (1 up) and bike north to Saffron
• Go to Gym

SAFFRON GYM

• Teleport puzzle: Up, Left, Down (go around), Down (go around)
• Sabrina: SD, Return Espeon, Return Mr Mime, Return Alakazam
• (If you still have a X Accuracy and get trolled by Double Team then use it now)
• Teleport puzzle: Right, Up, Up, Down
• Exit gym, bike right to Lavender

POWER PLANT QUEST 1

• Bike north to Cerulean, then bike east to Power Plant
• Dean: WA Golduck, Return Sandslash
• Repel, Surf to Power Plant, talk to red guy, Fly to Cerulean (1 up)
• Go to Gym, mash through cutscene, leave Gym
• Bike north to Nugget Bridge

NUGGET BRIDGE

• Dudley: WA Oddish
• Ellen: WA Wigglytuff, WA Granbull
• Joe: WA Tangela, WA Vaporeon
• Laura: WA Gloom, WA Bellossom, WA Pidgeotto
• Lloyd: WA Nidoking
• Shannon: WA Paras x2, WA Parasect
• Pat: WA Porygon
• Interrupt Misty’s date, Fly to Cerulean (1 up), Go to Gym

CERULEAN GYM

• Walk right around the gym and Surf to Misty
• Misty: SD, WA Golduck, WA Quagsire, WA Lapras, WA Starmie
• Grab Machine Part in upper left hand corner after fight, exit gym

POWER PLANT QUEST 2

• Bike east towards Power Plant
• Repel, Surf to Power Plant, talk to red guy, Fly to Saffron (1 down), bike to gym

CELADON GYM

• Jo + Zoe: WA Victreebel, WA Vileplume

• Fight the left trainer

• Tanya: WA Exeggutor

• Julia: WA Paras, WA Exeggcute, WA Parasect

• Erika: WA Tangela, WA Jumpluff, WA Victreebel, WA Bellossom

• Exit gym, Fly to Saffron, bike to Lavander

POWER PLANT QUEST 3

• Talk to guy in Radio Tower, Fly to Vermillion (2 up), head to gym

VERMILLION GYM

• Gregory: Return Pikachu, Return Flaaffy
• Lt. Surge: Return Raichu, HP Magneton, Return Electabuzz, Return Electrode x2
• Bike east out of Vermillion, use Super Repel, tune to 20, run from Snorlax
• Go through Diglett’s Cave, head to Pewter gym

PEWTER GYM

• Jerry: WA Sandslash
• Brock: SD, HP x5
• Exit gym, bike south towards Viridian Forest

VIRIDIAN FOREST/ROUTE TO CINNABAR ISLAND

• Super Repel when exiting Forest
• Stay to the right when exiting forest, then stay left after bonking trainer
• After Viridian City, go right of cliff, head straight down
• Surf south to Cinnabar, using a Super Repel
• (Pick up the rare candy)
• Talk to Blue, Super Repel when starting to Surf, then Surf east to Seafoam Islands

CINNABAR GYM

• Walk up to gym
• Blaine: HP x3
• Exit gym, surf right/up to Fuchsia City

FUCHSIA GYM

• Janine is the trainer in the middle-left of the gym
• Janine: WA Crobat, HP Weezing x2, WA Venomoth, WA Ariados
• Exit gym, Fly to Viridian (2 up), head to gym

VIRIDIAN GYM

• Use Full restore, and use Max Elixir
• Blue: SD x2, WA Pidgeot, HP Rhydon, WA Alakazam, WA Gyarados, Return Exeggutor, WA Arcanine,
• Exit gym, Fly to Pallet (1 up)

MT. SILVER

• Bike to lab, talk to Professor Oak
• Use Super Repel, Fly to Viridian City (2 up), bike west to Mt. Silver
• Heal when next Super Repel is needed
• (use rare candy here)
• (save!!!)
• Red: SD x3; Return everything. Hope for Thunder misses. If Thunder hits heal to full so you don't die to QA. Awful last fight to deal with.