Valve adds 'achievement sets' feature to Steam, grouping game achievements
Valve has launched a new Steam feature called achievement sets, which lets developers organize a game's achievements into separate groups covering the base game, DLCs, or limited-time seasonal content. Each set gets its own progress bar and a 'set complete' trophy shown on a player's profile, and Valve has also redesigned the Steam Achievements page to summarize overall and per-set progress. The feature is currently available in the latest Steam client beta, with titles like Portal 2, Team Fortress 2, Forza Horizon 5 and Crusader Kings III already supporting it.