A World Worth Saving is one of the Story Mode achievements Rockstar hides, so Steam gives no description until it unlocks. At 10.2%, it sits in rare territory, high enough that a solid chunk of players who stick with the story eventually reach it. The unlock percentage points to something tied to progress most players hit if they keep playing rather than a rare optional detour. Rockstar's usual reason for hiding an achievement like this is to avoid spelling out a specific story beat in advance, so the safest description is a milestone reached by continuing through the game rather than any particular side activity. There is no separate side quest or collectible list behind it. Playing the story forward is the only real strategy available.
This is a hidden achievement. Play through the story and it will unlock at the right moment.
Achievements unlock on Steam, PlayStation (as trophies) and Xbox alike. Cheats disable them for the session, so play clean when you are chasing one.
The community companion for Grand Theft Auto VI. Database, maps, guides and tools for Vice City and the state of Leonida.