Knock, Knock, Knock on Wood (25 player)

Knock Knock Knock on Wood, is the 25man version of Freyas Hard Mode and is required to complete the "Glory of the Ulduar Raider" meta achievement and earn a flying mount reward. This achievement is entirely similar when comparing it to Sartharions hard mode of him and the 3 twilight drake bosses.

This achievement requires you to engage and defeat Freya without killing her 3 Elders before battling her, the achievement is also required to complete an objective in the quest line to unlock the Algalon encounter.