The Lord of Destruction expansion pack is an add-on for the popular game Diablo II. This expansion, unlike Diablo: Hellfire, was made by the game's original publisher Blizzard North. The expansion pack adds many more features to the game such as
Another Act (Harrogath)
Ethereal Items (Can't be repaired)
Jewels (Like gems with more modifications)
Two more character classes (Assassin and Druid)
More space in your private stash (a chest where items are kept, double the size of Diablo II stash)
An alternate weapon/shield slot, switchable in real time (default "w" hotkey)
Runes -- stones that give powerful attributes to a socketed item when placed in it, or even more powerful attributes when placed in a certain number/combination, known as a "Runeword"
Hirelings that follow the player through the acts, as opposed to losing that hireling after finishing an act
Hirelings also can have equipment, which the player must equip. These are less extensive than the player equip, limited to only helm, chest armor, and the two weapon slots
DiabloII may be played as a single player game, multi-player via a LAN or serverless TCP/IP, or multi-player via Battle.net.
The hero then takes Diablo's soul stone (a device that is used to bind the soul of any demon or angel) and puts it into his own body, hoping to contain his soul for all eternity.
Added in the 1.11 patch for DiabloII released on August 1, 2005, the Pandemonium Quest is a late-game quest possibly intended to break the monotony of never-ending Baal runs on Hell difficulty, which is where most play took place in 1.10.