Just follow the map, it's pretty straight forward. At the end of the dungeon, there is a boss waiting for you.
At (2), you need to use Magic Key to unlock the door. Alternatively, you can change Luneth's job to Thief to open it without the key.
Boss: Goldor
This boss is very magic resistant, so I suggest you change any magic damage dealers (Black Mage or Red Mage) to any jobs that deal physical damage, either Monk, Dragoon, Thief, or any knights.
As I mentioned early that you should have one Viking job with the strongest defend equipment as a meat shield. During the battle, Viking uses Provoke skill. If successful, the boss will focus on attacking the Viking with physical attacks rather than casting spells. White Mage keeps everyone alive while other two deal physical damage.
After defeated the boss, pick up a key, then go back to your ship and unchain it with the key.
Chests (12):
- Golden Sword (x11)
- Wyvern Claws
After defeating the boss, pick up a key, then go back to your ship and unchain it with the key.
*** Now you get your Enterprise back, DO NOT fly over Saronia yet if you want to collect 100% bestiary because you will lose your airship.
Achievement: Jack of All Trades (Optional)
If you plan on getting 100% achievements, now is the chance to level your previous set of jobs. Go bak to Altar Cave, level up, until your jobs reach level 99. Please read Grinding Job Level section on how to effectively level up jobs.