In Diablo I, the quests are a series of missions (fewer in multi-player) on which the character is sent, and which offer advantages when completed. None of them need to be completed, but all add background detail and most give valuable rewards (even if only when reselling).

Tristram QuestsEdit

• The Defiler
• Farmer's Orchard
• Grave Matters
• The Jersey's Jersey
• Little Girl
• Na-Krul
• Reconstructed Note

Diablo and Hellfire quests
Diablo I quests
Anvil of Fury • Archbishop Lazarus • Arkaine's Valor • Black Mushroom • The Butcher • Chamber of Bone • Diablo • Gharbad the Weak • Halls of the Blind • Lachdanan • Magic Rock • Ogden's Sign • Poisoned Water • Skeleton King • Warlord of Blood • Zhar the Mad
Hellfire quests
The Defiler • Farmer's Orchard • Grave Matters • The Jersey's Jersey • Little Girl • Na-Krul • Reconstructed Note