Assembly: Microsoft.Xna.Framework.GamerServices (in microsoft.xna.framework.gamerservices.dll)
This method retrieves a calculated result only for titles approved to access Xbox LIVE Services through the Xbox LIVE Registered Developer Program. For Xbox LIVE Indie games, this method returns immediately with a predetermined default value.
The collection returned will include both earned and unearned achievements. Check Achievement.IsEarned to determine whether an achievement has been earned by the gamer.