Once you enter the castle, head straight north into the throne room on 3F, then talk to the king.
While you are inside the castle, start collecting treasures from 2F -> 1F and 2F -> 3F.
Chests/Items:
- C-023: 1000 gil - 2F -> 1F through hidden passage, left chest.
- C-024: 1000 gil - 2F -> 1F through hidden passage, right chest.
- C-025: Blizzard - 2F -> 3F through hidden passage, left section, bottom chest.
- C-026: Leather Shield - 2F -> 3F through hidden passage, left section, top chest.
- C-027: Tonfa - 2F -> 3F through hidden passage, top secret room.
Give Blizzard to your Black Mage (or Red Mage).
Next, collect more treasures from both towers.
Bestiary Checklist (West Tower):
Chests/Items:
- C-028: Holy Arrow - Western Tower, 3F, left chest.
- C-029: Hi-Potion - Western Tower, 3F, right chest.
- C-030: Wightslayer (Monster) - Western Tower, 4F.
Monsters: Griffon - C-031: Eye Drops - Eastern Tower, 3F, left chest.
- C-032: Antidote - Eastern Tower, 3F, right chest.
- C-033: Phoenix Down - Eastern Tower, 4F, left chest.
- C-034: Bow - Eastern Tower, 4F, right-bottom chest.
- C-035: Wooden Arrow - Eastern Tower, 4F, right-top chest.