Dark LegacyAchievements: secret goals with rewards.
Syntax: achievements (list your achievements) Syntax: achievements whois <index> (show it in your whois) Syntax: achievements who <index> (use it as your who badge) Syntax: achievements who none (remove your who badge)
By completing secret objectives in game you receive Achievements. Achievements reward you with a title and usually some gold, glory and experience, more when the objectives are especially hard to complete.
Achievements and their objectives are not listed anywhere. You will have to experiment and inspect other players.
You can flaunt your achievements in your 'whois', and can even use a single achievement as a badge on who. There are currently more than 325 achievements you can collect.
The game also finds it under: achievements, achievement, badges, badge.