Legacy achievements

Legacy achievements are old achievements that are now deprecated, made obsolete due to changes in the game, and no longer attainable, but are still kept by those that achieved them when they were available. These include old Player vs. Player ranks, raids or dungeons that have been revamped such as Onyxia's Lair (Level 60), and removed Challenge Mode achievements, Challenge Conqueror: Gold for example. See Feats of Strength achievements for Feats that still might be obtainable.