TL;DR
Valve says its new Steam Achievement Sets let developers split achievements into distinct categories to preserve completion percentages. The updated system is available right now on the beta branch.
Valve says its new Steam Achievement Sets let developers split game achievements into independently tracked and visually distinct categories. The update aims to stop post-launch DLC, expansions, and seasons from breaking completion percentages for players who already finished a game. Developers create and dictate the specific categories themselves.
Alongside this feature, Valve says the main achievements page has been updated with a cleaner interface, new toggles, and additional filters. The system is available right now on the beta branch as of October 19, 2026.
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