Factions area unlocking

Overview
The Prophecies campaign is very open compared to the Factions campaign. You can just explore and run to almost any place on the map. The only missions that open up unreachable areas are Sanctum Cay and Thunderhead Keep. The Factions campaign is different in that you are forced to follow the storyline by preventing you to access areas until you unlock them by doing quests or missions. The following is a list of the quests and missions you must complete to progress through the story and the world map.

Kaineng City
Vizunah Square -  ''Mission. Reveals Dragon's Throat which unlocks Shadow's Passage.'' Nahpui Quarter -  ''Mission. Reveals Senji's Corner which unlocks Xaquang Skyway.'' Tahnnakai Temple -  ''Mission. Reveals Zin Ku Corridor which unlocks Sunjiang District.''
 * Welcome to Cantha -  Primary quest. Unlocks Vizunah Square mission.
 * Finding The Oracle -  Primary quest.
 * Closer to the Stars -  Primary quest. Unlocks Nahpui Quarter mission.
 * To Tahnnakai Temple -  Primary quest. Unlocks Tahnnakai Temple mission.
 * A Meeting With the Emperor -  Primary quest.
 * The Count's Daughter -  Primary quest. Unlocks Arborstone mission.

Arborstone -  ''Mission. Reveals Altrumm Ruins which unlocks The Convocation quest.'' Boreas Seabed -  ''Mission. Reveals Zos Shivros Channel which unlocks City Under Attack quest.'' Sunjiang District -  ''Mission. Unlocks Journey to Cavalon and Journey to House zu Heltzer quests.''
 * The Convocation -  Primary quest. Unlocks Boreas Seabed mission.
 * City Under Attack -  Primary quest. Unlocks Battle in the Sewers quest.
 * Battle in the Sewers -  Primary quest. Unlocks Sunjiang District mission.

At this point the story line splits and allows you to follow one side or the other. It is advisable to follow one side then the other. As you do quests for either side you can earn faction for that side. When you spend your faction on one side, you will lose the same amount from the other. So it's better to earn faction from one side, spend it all, then earn faction from the other side.

Luxon Storyline

 * Journey to Cavalon -  Primary quest. Unlocks Cavalon town (Note: It is possible to reach cavalon by going through Breaker Hollow to the southern entrance. The primary quest Befriending the Luxons will not be available, however). From here all the Jade Sea locations are unlocked up to Gyala Hatchery mission.
 * Befriending the Luxons -  Primary quest. Unlocks The Stolen Eggs quest.
 * Stolen Eggs -  Primary quest. Unlocks Gyala Hatchery mission.

Kurzick Storyline

 * Journey to House zu Heltzer -  Primary quest. Unlocks House zu Heltzer town. From here all the Echovald Forest locations are unlocked up to The Eternal Grove mission.
 * Befriending the Kurzicks -  Primary quest. Unlocks The Defenders of the Forest quest.
 * The Defenders of the Forest -  Primary quest. Unlocks The Eternal Grove mission.