Archimonde has lead two Burning Legion assaults on the world of Azeroth. In the first invasion, he was defeated by Malfurion Stormrage who lead a charge with his followers and the help of the Dragonflights. Ten thousand years later, Archimonde returned via means of the Scourge and Kil'jaeden. This time he brought Night Elf cities to the ground and tried to destroy the world tree, Nordrassil. Again, he was defeated, once and for all by Malfurion.
In World of Warcraft: The Burning Crusade, the old Mount Hyjal battle was introduced in the Caverns of Time instance hub, where characters who reached the level cap of seventy could relive in the battle against Archimonde.