Where can I find the Sojourner quests for the achievement?

[noxnotix]

Where in the guide is it under?

[ZG Support 1]

We have not completed guides for the Sojourner achievements yet.

[Zygor]

While we don't have specific achievement guides for those, we do have Threads of Fate guides for each zone. Those should naturally help you finish the Sojourner achievements, or get very close.