Chapter 3 checklist
- Enter underworld via hole / airship path after Zot / Baron beats
- Dwarf Castle: meet King Giott; shops; Calcabrina if fought
- Tower of Babil (underworld side): crystals, bosses, Lugae
- Edge joins; learn Throw / Ninjutsu
- Sealed Cave: key from Giott; trap floors; crystal; Kain betrayal beat
- Strip temporary allies (Cid/Yang moments) when they exit
- Giant of Babel / moon (Ch.4–5)
Dwarf Castle
- Land in the underworld magma fields; find Dwarf Castle.
- Talk to King Giott; alliance against Golbez.
- Buy underworld gear — often stronger than surface midgame.
- Optional bosses / tanks in the castle basement as PR presents them.
- Receive the quest to stop the Tower of Babil crystal drain.
Tower of Babil (lower / mid)
- Enter Babil from the underworld entrance.
- Long vertical dungeon; save stamina and Phoenix Downs.
- Bosses include Dr. Lugae / Balnab style fights — kill the controller, watch bomb self-destruct patterns.
- Rydia (adult) should be with you by now if story restored her in the Feymarch path — if not yet, complete the Feymarch / Leviathan mother scenes when the game opens them (often around this arc).
- Exit sequences may split surface vs underworld Babil — follow the crystal you still need.
Feymarch: If available, visit the land of summons for optional bosses and Rydia’s strongest eidolons (Bahamut comes later on the moon).
Edge of Eblan
- After Eblan cave / tower scenes, Edge joins as Ninja.
- Front or back depending on throw vs physical; Throw uses inventory weapons as ammo — stock cheap throwing weapons.
- He is endgame permanent. Invest in his levels freely.
Sealed Cave
- Get the Luca Key / sealed cave key from the dwarves.
- Doors re-trap behind you — plan one-way routes; open chests as you go.
- Boss: Demon Wall (timer pressure). Burn it down fast with dual physicals + Rydia spells; Rosa on Cure/Fast.
- Crystal scene; Kain’s will breaks again under Golbez.
- Return to Dwarf Castle; prepare for the surface Giant arc (Chapter 4).