Good question! Wiki editor badges are generated from making edits to topics that are wikified.
An example of currently wiki’d threads are:
.: Tanren Chambers, a Guide to Everything~ [WIP] :., Controls and Commands Guide, ~PMU Egg Guide~, and A Guide to All Dungeons. If you’d like to request a topic to be wiki’d, let us know!
We may wiki existing posts in #game-discussion:game-guides and in other categories where it feels appropriate to do so, especially for those threads where the original poster isn’t active anymore. New posts in game guides may be automatically wiki’d in the future as well.
In addition, anyone who is trust level 3 will be able to create wiki posts on their own. Trust level 3 is currently disabled while we see how everyone is adjusting to the new platform, however we may enable it in the future! Progress towards the next trust level is still counted regardless of tl3 being disabled.