Steam has launched Achievement Sets in beta.

Valve’s Steam Achievement Sets beta gives base games and DLC their own progress bars, adds set-complete trophies and lets studios archive seasonal achievements.

Valve has launched "Achievement Sets" in beta, a new feature that categorizes and manages Steam achievements in grouped sets.

This week, Valve has put out a refreshed set of guidelines on Steam, specifically relating to various rules on DLC release dates and delivery of content. From here on, Valve will require developers ...