You found Archaea!

Get a destruction callout for breaking 50 objects.

Equip all Inventory slots with Legendary items that have a minimum required level of 70 or higher.

Recruit the Templar, Scoundrel, and Enchantress.

Raise the Blacksmith to level 12.

Pick up 500,000 gold.

Kill 500 monsters while in Nephalem Rifts.

Complete all quests in Act V.

Kill 500 elite (champion, rare, or unique) enemies.

Kill Urzael.

Raise the Mystic to level 12.

Complete all quests in Act IV.

Complete all quests in Act III.