The Secret of the Vizjerei

From Diablo Wiki

The Secret of the Vizjerei is the second chapter in the Diablo II storyline. The player travels to Lut Gholein to stop the Dark Wanderer from freeing Baal.

[edit] Summary

The player reaches Lut Gholein by Warriv's caravan and immediately blends into the city by helping Atma avenge her husband and son by killing Radament in the city Sewers.

In Radament's Lair, the player finds a Horadric Scroll which holds the secret to create the Horadric Staff, the key to Tal Rasha's Chamber. The player then sets off to find the parts of the staff.

These require a vast search of the desert to find. Meanwhile, Claw Vipers capture the sun, enshrouding Aranoch (full effect unknown) in darkness; When the hero finally reaches the Tomb of Tal Rasha they are too late, Baal has already been freed. Instead, they find Duriel (Act II boss), one of the Great Evils of Hell, guarding the tomb and attempting to stop anyone from following Diablo and Baal. He was ordered to do such a lowly job as punishment from the Prime Evils for acting against them during the Dark Exile. Tyrael is found to be held captive inside the tomb after the player defeats Duriel.

Players are usually around level 21 when they finish Act II.

Unlike the other acts, Act II requires several dungeons (to complete the staff) to be completed before it can be finished, instead of just killing the act boss.