Thanks to GoddessMaria for lots of help with this route  :)

OPPONENT DECKS: https://gamefaqs.gamespot.com/gba/589651-yu-gi-oh-worldwide-edition-stairway-to-the-destined-duel/faqs/27093
DUELIST TRACKER: https://github.com/MikeKatz45/Game-stuff/blob/master/Yugi_stairwayGBA_duelistTracker.zip

OVERWORLD STRATEGY:
- Plan your route in advance on emulator (or by exporting your console save file to emulator)
- Avoid extra text boxes like ghouls notifications if possible
- First route (2 passengers): https://pastebin.com/sML00zAR

DUELING STRATEGY:
- FTK using Cyber-Stein + BEUD + equip (usually Megamorph)
- Try to go first (mash A), except against Mai
- If you go first, end your turn immediately no matter what
- Change of Heart is a monster removal card that gives you more damage + more United We Stand power. Occasionally it's good enough to win without Cyber-Stein
- Painful Choice options:
    > If need Cyber-Stein, choose 3 Cyber-Stein and 2 Monster Reborn (if you have Monster Reborn in hand, only need 1 Cyber-Stein)
    > If need equip, choose 3 Megamorph and 2 UWS/MP
    > If need monster removal, choose 5 Change of Heart/Raigeki
    > If need magic/trap removal, choose 5 HFD/Giant Trunade
- If you are "trapped," meaning you have <=5000 LP or you have no way to get Cyber-Stein outside of your draw phase, it's probably best to surrender or reset

MAIN DECK:
3x Cyber-Stein
-----
3x Pot of Greed
3x Graceful Charity
3x Card Destruction
-----
3x Raigeki
3x Change of Heart
1x Snatch Steal
3x Harpie's Feather Duster
3x Giant Trunade
3x Megamorph
3x United We Stand
3x Mage Power
3x Monster Reborn
3x Painful Choice
SIDE DECK:
3x Blue-Eyes Ultimate Dragon

CONSIDERING:
- Premature Burial