Unity Script Reference:
Legacy Documentation: Version 4.3.0
IAchievementDescriptionNamespace: UnityEngine.SocialPlatforms
Description

Static data describing an achievement.

Retreive the achievement descriptions by using Social.LoadAchievementDescriptions. GameCenter: These are stored server side and should be fetched when the user has authenticated. These are set in the iTunes Connect.
Variables
achievedDescription Description when the achivement is completed.
hidden Hidden achievement are not shown in the list until the percentCompleted has been touched (even if it's 0.0).
id Unique identifier for this achievement description.
image Image representation of the achievement.
points Point value of this achievement.
title Human readable title.
unachievedDescription Description when the achivement has not been completed.