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Diablo Wiki

Quests are a series of missions of which most are integral to proceeding in the single-player game. Most can be skipped, only a few are truly necessary to complete to advance in the game. Still, many quests may offer good rewards for completing them, so many players opt to complete them at later points in the game if they did not the first time through.

Non-optional Quests

Each act has at least one quest that must be completed in order to progress, and that is the boss kill quest that requires the player to kill a Great Evil. For each of the five acts, these are:

Some acts have other quests that are necessary to complete. In these cases, these quest must be finished in order to reach the area the act boss is in. They can be seen as prereqs for the last quests of each act

The quests listed above are required by the game code to be completed. However if they player plays singleplayer, some become almost mandatory since they cannot be skipped by advanced players opening Town Portals ahead of the game (and they are a lot more appealing to do as you are faced with them anyway).

Some quests are also hard to miss completing. For example, The Summoner is technically not mandatory, but he appears right next to the book that needs to be read to complete the actual mandatory quest, The Arcane Sanctuary. So while a player can technically run past The Summoner and just read the book, most will kill him while they are there.

Useful Quests

There are several optional quests that players will probably wish to finish even though they are not mandatory. These quests offer tangible rewards.

  • Den of Evil, Radament's Lair and The Fallen Angel all three give the player extra skill points when completed. These are of great help to all characters and should always be finished no matter what build or difficulty, for a total of 12 extra skill
  • In Act III, The Golden Bird, and Lam Esen's Tome quest are useful as they add 20 health points and 5 stat points respectively, each difficulty.
  • In Act IV, The Hell's Forge quest will give you several high quality gems and a decent chance at a mid to high rune.
  • In Act V, The Siege on Harrogath will allow you to add a socket to any non-socketed item, and The Prison of Ice quest will grant you a passive +10 to all resistances bonus (+30 in total once completed at all difficulties).

List of Quests

Act I Quests

The Sightless Eye
Den of Evil icon.png Sisters' Burial Grounds icon.png The Search for Cain icon.png The Forgotten Tower icon.png Tools of the Trade icon.png Sisters to the Slaughter icon.png
Den of Evil Sisters' Burial Grounds The Search for Cain The Forgotten Tower Tools of the Trade Sisters to the Slaughter

Act II Quests

The Secret of the Vizjerei
Radament's Lair icon.png The Horadric Staff icon.png The Tainted Sun icon.png The Arcane Sanctuary icon.png The Summoner icon.png The Seven Tombs icon.png
Radament's Lair The Horadric Staff The Tainted Sun The Arcane Sanctuary The Summoner The Seven Tombs

Act III Quests

The Infernal Gate
The Golden Bird icon.png Blade of the Old Religion icon.png Khalim's Will icon.png Lam Esen's Tome icon.png The Blackened Temple icon.png The Guardian icon.png
The Golden Bird Blade of the Old Religion Khalim's Will Lam Esen's Tome The Blackened Temple The Guardian

Act IV Quests

The Harrowing
The Fallen Angel icon.png Hell's Forge icon.png Terror's End icon.png
The Fallen Angel The Hellforge Terror's End

Act V Quests

Lord of Destruction
Siege on Harrogath icon.png Rescue on Mount Arreat icon.png Prison of Ice icon.png Betrayal of Harrogath icon.png Rite of Passage icon.png Eve of Destruction icon.png
Siege on Harrogath Rescue on Mount Arreat Prison of Ice Betrayal of Harrogath Rite of Passage Eve of Destruction