Full list of all 12 Faery: Legends of Avalon achievements worth 200 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox 360.
Eliminate the first boss.
Speak with all of Avalon's inhabitants.
Meet all the inhabitants in the Faery worlds.
Collect 60 items of equipment.
Bring a close to the Awakening chapter.
Save the Tree World.
Save the Flying Dutchman.
Save the Scarabaeid.
Complete all secondary quests on Avalon.
Complete all the secondary quests in the Tree World.
Complete all the secondary quests of the Flying Dutchman.
Complete all the secondary quests of the Scarabaeid.