Fates of the Shadowlands Raids

Fates of the Shadowlands Raids is a feat of strength earned by completing all three Fated raids in Shadowlands Season 4.

The achievement rewards Jigglesworth, Sr., based on the Gooey Slimesaber--one of the choices from the Choose the Next Shadowlands Mount community vote that did not win.

It is not possible to obtain this achievement on Raid Finder difficulty. Though this was not initially made clear by the achievement text, at the start of Season 4 it was updated in an undocumented hotfix to state that it required "Normal difficulty or higher".