#0 - Nov. 4, 2008, 12:51 a.m.
Blizzard Post
The Champion of the Frozen wastes achievement currently has a bug. There is a "hidden" criteria to kill Malygos in the achievement that is not displaying to characters. This can result in a player thinking that he has completed all of the necessary requirements to fulfill the achievement but not receive credit.

Please be advised that killing Malygos is required for the achievement. In an upcoming client patch (we're unable to hotfix this and it cannot be done for 3.0.3), the Malygos criteria will display properly.