Phantasy Star Online 2 Cheats :
Unlockable - Unlocking Areas
This guide has been revised and updated with new information and requirements as of November 27, 2012. If you are using Ricardo's website for Koffie's Client Orders guide, then I advise you rely on using that instead of this.
Each requirement, asides the Arks Quest: Forest, are required to be S Ranked within a certain time limit. In order to unlock Free Field Quests of that area, you also need to collect 2 data from native enemies. Natives from Naberius, Dragonkin from Amduscia, and Mechs from Lillipa. The only time where Darker drops those things are in Arks Quest: Ruin.
Certain requirements also includes difficulty to unlock more quests. If I don't include a certain difficulty to unlock the following quests, then it means you are free to do it on Normal. These are the requirements that SEGA decided to keep; not my idea.
If you need a boss strategy guide, please refer my Walthrough for PSO2 Bosses for more details. [Coming soon]
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