Temple of Earth

There are no hidden chests here. The floor has the same layout as the other temples and you can inspect the empty rooms to view some short articles that will give more insight about the story. There's an Earth Charm in the southeastern corridor, an Earth Mallet in the northeastern room and a Light Curtain from the narrow corridor heading south. Make your preparations and save your game.

Have everyone equip Earth Charm and Abate Earth (Swordmaster JLV 2). The boss is weak against Light and has the Undead Type, which means LV5 white healing magic Curada can be used against it. Curada recovers a lot more HP if you have the Holy One (Spiritmaster JLV9) and Healing Lore (Salve-Maker JLV9) equipped on your healer.

If you also have the JLV 10 Ranger skill Undead Slayer, you can use it to your advantage as well. If you followed this walkthrough, you should have access to a few weapons that deal Light-based damage. You should have Excalibur, Divine Fists and Holy Lance.

Boss: Gigas Lich

HP: 80,000 Weakness: Light, FAM: Undead

Gigas' Slam deals a lot of damage to everyone while it can use Quaga to deal high earth damage to a single target. Gigas can also use this move on himself to recover a bit of HP. It will use Negative Power to boost its p.attack and m.attack stats. You can use dispel to remove this boost. It will also use Fear to inflict the dread status and can also use Death to instantly take out your characters.

You can steal Giant Gloves and another Giant Axe. After the battle, you'll receive a Giant Axe. Like the other cyrstals, you have to go through the ritual to awaken the Earth Crystal. With the last cyrstal awakened, your support ability will be increased to one again. Use a teleport crystal to go back to the first floor. Exit the tower through the east to find yourself in an open spot where you can call in the airship.

Since you can call in the airship already, you can start collecting the keystones for the Vampire Castle sub-scenario if you want. Refer to the this link for details.