Enemy list
Chest list
This chapter covers more ground than the first two. You'll cross continents, fight two bosses, and unlock the Mystic Key that opens every locked door you've been walking past.
Sailing to Elfheim
Board your ship at Pravoka and sail south along the coast. Dock at the port on the western continent and walk south inland to Elfheim.
Elven Castle
Before going into town, visit the Elven Castle just north of Elfheim. Inside you'll find the Elf Prince in a deep sleep. His attendant explains that the dark elf Astos cursed him, and only Matoya might know how to break the spell. You already met Matoya back in the Pravoka chapter; she needs her Crystal Eye before she can help anyone.
The castle has locked chests you can't open yet. They require the same Mystic Key as the other locked doors you've been passing. After you've spoken to the attendant, head into Elfheim Town.
Elfheim Town
Elfheim sells Level 3 and 4 spells. Haste (4,000 Gil) is the priority since it doubles a character's hits per turn. Cura (1,500 Gil) gives your healer better recovery. Fira and Thundara (1,500 Gil each) upgrade your damage spells so your mage can hit more than one enemy at a time.
The weapon and armor shops here aren't worth much if you grabbed gear in Pravoka. Save your Gil for spells unless you skipped earlier towns.
Western Keep
Head northwest from Elfheim through the forests and mountains. You'll find a ruined castle called Western Keep. Inside is a room where a king sits on his throne. He'll ask you to retrieve his Crown from the Marsh Cave, south of the continent.
There's a locked room here containing treasure, but it requires the Mystic Key. Exit the Western Keep and head for Marsh Cave.
Marsh Cave
Head south to the very bottom of the continent and you'll find a hole in the ground surrounded by wetlands. This is your first dungeon in the game; it's three floors deep with 18 treasure chests. Scorpions, Cobras, and Crawlers all inflict poison, so buy 10-15 Antidotes (75 Gil each) before entering. Bring Antidotes even if you have Poisona.
Marsh Cave Directions
Enter and go north first. Take the stairs down to B2 North and grab the treasure from the side rooms: some Gil, a Dagger, and a Potion. Return to B1 and take the southern stairs to B2 South. More treasure rooms here, then stairs in the southeast corner lead to B3.
B3 has the Crown. The chest is in a room second from the left, surrounded by rocks. Before you grab it, clear the other treasure rooms on this floor. Several chests are locked and you'll return for those later with the Mystic Key. See the full Marsh Cave chest guide for all locations.
Enemies on B3 include Ghouls that can paralyze and Shadows weak to Fire. Use Fira to clear undead groups. Heal up before grabbing the Crown.
Piscodemons
When you take the Crown, four Piscodemons ambush you.
After the fight, exit the Marsh Cave and use a Tent outside. Head back to the Western Keep.
The King
Return to Western Keep with the Crown. When you give it to the king, he reveals his true form: Astos, King of the Dark Elves.
Defeat Astos and you receive the Crystal Eye. Time to trade it with Matoya.
Waking the Elf Prince
Sail back north to Matoya's Cave (near the bridge north of Cornelia). Give her the Crystal Eye and she hands over the Jolt Tonic.
Return to the Elven Castle and give the Jolt Tonic to the Prince's attendant. The Prince wakes up and rewards you with the Mystic Key.
Head inside the Elven Castle and speak to the attendant beside the Prince's bed. He administers the Jolt Tonic and the Prince finally wakes up, handing you the Mystic Key as thanks.
Mystic Key Treasures
Remember all those locked doors? The Mystic Key opens every single one. Since you're already in the Elven Castle, walk towards the entrance and turn right, then head up hugging the wall. You'll find a room with 4 chests: Mythril Hammer, 800 Gil, 700 Gil, and Bronze Gloves.
Marsh Cave. You'll have to venture back into Marsh Cave for this one. The rooms are on the south side of B3 where you picked up the Crown. Start from the left going right and skip the third room (it's empty). You'll find a Silver Armlet, an Antidote, and 1,020 Gil. Each chest triggers a fight with 4 Piscodemons.
Western Keep. Return to Western Keep where you fought Astos. Walk between the pillars and take your first left, then head south until you reach a room. Three chests here: Falchion, Power Staff, and Steel Gloves. All of them are guarded — 6 Wraiths, 5 Mummies, and another 5 Mummies.
Cornelia Castle. Take a right as soon as you enter and follow the gray path all the way to the top. Turn left at the end until you see the blue path opening, then take a right and follow it through until you see two rooms. Six treasures in total: Saber, Mythril Knife, Cottage, Iron Armor, Tent, and the Nitro Powder. No monsters this time. The Nitro Powder is required to continue the story.
Chaos Shrine. Head north to the Chaos Shrine. This time you can access the rooms in the northeast and southeast corners. Pick up a Rune Blade, a Werebuster, and a Gold Needle.
Mt. Duergar
With the Nitro Powder in hand, walk back to your ship and sail northeast. Follow the coastline until you come across a port. Dock here and walk southwest on foot to find a cave entrance in a ring of mountains. This is Mt. Duergar, home of the dwarves.
As soon as you enter, visit the room to the north to grab 450 Gil and 575 Gil. Exit and walk to the far left side, then head south. You'll hit an intersection; take either path until you reach a room full of treasure chests.
Once you've looted everything, step outside the room and take a right. Talk to Nerrick, the dwarf with the green hat. Give him the Nitro Powder and he'll blow open a canal connecting the inner sea to the outer ocean. Your ship can now sail anywhere.
Exit Mt. Duergar and head back to your boat.