Final Fantasy III/Hein Castle

Suggested team for this chapter:
 * Thief (you need now his lockpick ability);
 * Knight (full equipment in the treasure rooms);
 * Scholar (full equipment in the treasure rooms);
 * Ranger (you have now weapons only he can use).

Dwarven Hollows treasure room
After defeating Salamander-Guzco, go back to the Dwarven Hollows and return them the Ice Horns. The dwarves will thank you by granting access to their treasure room. In there, you'll find full equipment for the Scholar and full armor for the Knight (you already have strong swords he can equip), plus many other items. Check the list below.

🇨🇴 Weapons: 🇨🇴 Armor parts: 🇨🇴 Items: 🇨🇴
 * Book of Fire (for the Scholar)
 * Book of Ice (for the Scholar)
 * Book of Light (for the Scholar)
 * Killer bow (for the Ranger)
 * Knight armor (for the Knight)
 * Gauntlets (for the Knight)
 * Heroic shield (for the Knight)
 * Scholar robe (for the Scholar)
 * Scholar hat (for the Scholar)
 * Elixir
 * Phoenix down
 * Phoenix down
 * Gold needle
 * Echo herb
 * Ottershroom
 * Gysahl greens
 * Magic key
 * Magic key (given by a dwarf)

Castle Argus treasure room
Check the fourth candle from left for a secret passage to the east. You will then come in a room with three chests behind a wall which can walked through. Go upstairs and you find six more chests. Go upstairs again and go left until the door. Unlock it with the thief in your party (if you don't have one then change someone to a thief and place him at the head of the party).

Check the dresser to give way to three chests. Exit the room and go right to another door. Unlock it and you are in a room with six chests. The contents of all chests are listed below.

Go back to the room with four candles. Now you're done here so exit the castle and go southwest to the Living Forest.

🇨🇴 Weapons: 🇨🇴 Armor parts: 🇨🇴 Items: 🇨🇴
 * Killer bow (for the Ranger)
 * 20 Light arrows (for the Ranger)
 * 20 Fire arrows (for the Ranger)
 * 20 Ice arrows (for the Ranger)
 * 20 Medusa arrows (for the Ranger)
 * Book of Fire (for the Scholar)
 * Book of Ice (for the Scholar)
 * Book of Light (for the Scholar)
 * Scholar robe (for the Scholar)
 * 3000 Gil (three chests in secret passage)
 * 4700 Gil (six chests in upper floor of secret passage)

You now have full equipment for your party:
 * Knight: full armor set, three swords with different elements;
 * Scholar: full armor set, six books with three different elements;
 * Ranger: bow and arrows with four different elements; he can wear armor previously found;
 * Thief: he can wear weapons and armor previously found;
 * Geomancer (DS): no equipment for him yet.

Living Woods
You will meet some fairies there and a crater where the elder tree was. The fairies tell you that Wizard Hein from Castle Argus came and placed a curse on the elder tree and took him. The elder tree is transformed in a castle and wander the desert near Tokkul aimlessly. They also tell you something about Hein's weakness. Now go back to the town of Tokkul.

Hein castle
Most enemies are undead, i.e. weak against Holy and Fire, as the Scholar can confirm. Let the Ranger use his Holy Arrows freely, as this dungeon is the last one in the game with a large number of undead enemies. The Knight and the Scholar should equip fire weapons: the Salamand sword and two Books of Fire, respectively. Switch to any other arrows and sword when fighting against enemies that are not undead (access Item menu during battle). The Thief should always try to Steal instead of attack.

BOSS: Hein
The Scholar should repeatedly Study the weakness of Hein. Then, open the Item menu and change the weapons of Scholar, Knight and Ranger to match Hein's weakness. The Thief, instead, neither has elemental weapons nor he can steal much from a boss: let him use the offensive items he stole during the various battles.