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{{quests}}The '''Pandemonium Event ''' is a multi-stage bonus quest added in [[v1.11. It can only be undertaken on the Battle.net realms, and is not functional in Single Player or LAN games. This quest culminates with a massive battle against souped up versions of Diablo, Baal, and Mephisto, along with the minions they summon, in a new version of the town Tristram. This struggle is by far the most difficult one in the game, and is the only way to obtain the [[Unique_Charms#Hellfire_Torch|Hellfire Torch]] unique large charm.

==Introduction==The Pandemonium event can only be undertaken on the [[Battle.net]] realms, and is not functional in Single Player or LAN games. This quest culminates with a massive battle against souped up versions of [[Diablo]], [[Baal]], and [[Mephisto]], along with the minions they summon, in a new version of the town [[Tristram]]. This struggle is by far the most difficult one in the game, and is the only way to obtain the [[Unique_Charms#Hellfire_Torch|Hellfire Torch]] [[uniques|unique]] large [[charm]]. There are several steps you must complete in order to reach [[Uber Tristram]].

[[Image:Quest-3keys.jpg|frame]]The first step is to gather the three keys required to open the first of the red portals. The Keys of [[Key of Hate|Hate]], [[Key of Terror|Terror]], and [[Key of Destruction|Destruction ]] are required, and can only be found from certain [[boss monsters]], and only on [[Hell ]] difficulty. Get the Key of Terror from [[The Countess]], the key of Hate from [[The Summoner]], and the Key of Destruction from [[Nihlathak]]. It's a good idea to have 3 of each key before beginning the second stage of the Pandemonium Event, for reasons that will be explained below.

These are dropped by [[The Countess]], who is located on the fifth level of the [[Forgotten Tower ]] in the [[Black Marsh]], [[Act One]]. She is commonly run for her rune drops, and will drop a [[Key of Terror ]] about 8% of the time she dies on [[Hell difficulty]].

[[The Summoner ]] drops this one. He's found at the end of one of the four points of the [[Arcane Sanctuary]], in [[Act Two]]. He will only drop a [[Key of Hate ]] on [[Hell difficulty]], and even then only every few games.

[[Nihlathak ]] sometimes drops this key, but only on [[Hell difficulty]]. He's found at one end of the four-pointed [[Halls of Vaught]], the lowest of the three Halls levels reached through [[Anya]]'s portal in [[Harrogath]], in [[Act Five]].

[[Image:Quest-3keys2.jpg|frame]]Once you have the keys, stand in [[Harrogath]], on [[Hell difficulty]], place one of each in your [[Horadric Cube]] and convert them. A red portal will open to one of three locations; the [[Matron's Den]], the [[Forgotten Sands]], or the [[Furnace of Pain]]. Which portal opens first is random, but if you do all three in the same game you will not get the same one twice. For this reason it's recommended that you have 9 keys to begin with, 3 of each type, so you can do them all in the same game.

It's also recommended that you stand in different places so you'll spread out the three portals, so they don't overlap and make selecting the correct one 'uber difficult'. You'll be adding a 4th portal once you've completed these three, to [[Uber Tristram]], so save room.

[[Lilith ]] drops [[Diablo's Horn]], one of the three items required to open a portal to [[Uber Tristram]].

[[Uber Duriel ]] drops Baals [[Baal's Eye]], one of the three items required to open a portal to [[Uber Tristram]].

[[Uber Izual ]] can teleport, and often spawns with some very nasty minions. He drops [[Mephisto's Brain]], one of the three items required to open a portal to [[Uber Tristram]].

To create a [[red portal ]] to [[Uber Tristram]], place [[Diablo's Horn]], [[Baal's Eye]], and [[Mephisto's Brain ]] in the [[Horadric Cube]], and transmute them while standing in [[Harrogath ]] in a [[Hell difficulty ]] game. A red portal will open, the fourth in that area if you've done them all in the same game. It takes you to Uber Tristram, where the real fun begins.

Uber Tristram has the same layout as regular [[Tristram]], though the entry portal appears towards the north of town, rather than in the far eastern corner. Scattered through the center of town are [[Uber Mephisto]], [[Uber Baal]], and [[Pandemonium Diablo]] (so named because [[Uber Diablo]] was already used in a another bonus quest). They are massively harder than their usual act boss selves, boosted by new abilities and much higher [[hit points]], [[defense]], [[damage]], and more. They are also able to summon minions at regular intervals, further complicating things for intrepid adventurers.

He possesses all of regular Baal's attacks and more, including [[Mana Rift]], [[Hoarfrost]], [[Incineration Nova]], and more. Check the [[Uber Baal]] page for more details. He can also teleport and duplicate himself.

He is much stronger and faster than regular [[Diablo]], and uses his [[Bone Prison ]] and [[Firestorm ]] skills to lethal effect. He can cast [[Armageddon]], the [[Druid ]] skill, raining fire down on all his attackers, and frequently summons a variety of nasty monster minions during the battle. See the [[Pandemonium Diablo]] page for more details and full stats.

[[Image:Quest-uber-tristram1.jpg|thumb|300px|Mephisto's Minions]][[Uber Mephisto]] is a deadlier version of himself. He comes with a very high level [[Conviction aura Aura]] which will reduce maxed resistances [[resistance]]s to negative values, and a variety of elemental attacks including [[Blizzard ]] and [[Lightning]]. His resistances are very high as well, and he regularly spawns elemental minions such as [[Skeleton Mages Mage]]s and [[Skeleton Archer|Archers]].

The principle reward for this mission is the [[Hellfire Torch]], a [[uniques|unique ]] large [[charm ]] that can only be obtained from this quest. Like the other unique charms, characters can only hold one of each at a time, so you'll want to bring in a character who does not have one to pick up the prize.

[[Image:Standard-of-heroes.jpg|frame]]In addition to the Hellfire Torch charm, one [[Standard of Heroes ]] item drops for each character in the game. These items do not yet have any function, but rumors rumours abound about what they might do in some future version of the game.

Besides the items, it's possible to gain a tremendous amount of experience in [[Uber Tristram]], by killing the various minions the uber bosses spawn. Players have found that this is a great way to power level lower level characters. These characters are of no use in the battle and must stay well out of the way or risk instant death, but by being in the area and in the party, they will enjoy enormous shared experience bonuses. Reports of leveling from 1 to 80 or even 90 in a couple of hours spent in this area are not uncommon. This exploit requires a number of very powerful characters doing the tanking and killing, but with teamwork it's quite possible.

==Pandemonium Event Tips==

*Be sure the game is up long enough, 5-10 minutes, to become permanent. Be sure you know the game name/password so you can rejoin if you get disconnected, or if you die to retrieve your corpse (which is hard since you can't make town portals in [[Uber Tristram]]).*Spread out the [[red portals portal]]s in [[Harrogath]], for easier access.*All the characters in the game must be in [[Act Five]].*It is not necessary to kill regular [[Baal ]] before undertaking the Pandemonium Event.

Thanks to * [http://forums.diabloii.net/showthread.php?t=546295 PvtCaboose] for info information and many screenshotsscreenshot thread.