Congratulations Turbine. It's a major milestone- the one year anniversary of the unplayable Black Abbot raid. That has to be some kind of global record. Some games have harder sections or stupider sections, of course, but those are either not places meant to be playable, not games that are actively updated, or not targetted at a semi-casual mass audience. Naturally there is some room to quibble on what it means to be "unplayable" and how that differs from "unbeatable" (because it's certainly beatable, as literally dozens of victories have shown). But in the overall analysis, attempting to beat the Accursed Ascension raid is so far from any kind of "playing" as to easily cinch a title.
Following is collected history on this special achievement. (Some dates are inexact)
Prelude
07-06-06 Titan raid released.
08-16-06 Litany of the Dead 1 released. Widely disliked due to flaws that are serious, but not inherent or pervasive.
10-23-06 Titan raid beaten.
This sets a record for the longest time any of Turbine's quests has gone un-beaten, which took a stupifying effort by the group and a lot of guesswork and luck.
10-25-06 Titan raid fixed to be reasonably beatable (laser can now strike his body, etc)
10-25-06 Laliat raid released.
10-30-06 Laliat raid beaten
12-10-06 Laliat raid soloed (first by a ranger). This remains uncommon, especially for non-rangers, but mostly due to the lengthy re-flagging quests.
01-23-07 Litany2 released, to more dislike than the first part.
04-12-07 Reaver raid is released (Litany3).
04-15-07 Reaver raid is beaten. Possibly devs had wanted it to take longer.
05-05-07 Reaver raid is soloed (first by a wizard). A gradually accelerating trend develops for many players to do this, due to the free spellpoints and lack of any reflagging.
07-31-07 Responding to complaints that some raids are beatable solo or in small groups, a developer fatefully promises that the Abbot raid will be impossible without at least 6 players, and not because of scripted requirements, but because the fight is simply hard.
Abbot
09-27-07 Black Abbot raid released.
10-01-07 Black Abbot raid is defeated for the first time.
The key technique is to not attempt any of the three challenges, and for the players sent to them to immediately die and rejoin the main group. Then the Abbot's special attacks can be either ignored (Phase Wraiths), jumped out of (Encase), or mass-healed through (Inferno). Aside from discovering not to waste time on the challenges, recruiting clerics able to heal through Inferno is the greatest challenge (it requires Quicken at minimum), although there are other serious threats.
10-06-07 Mini-patch to add the usual raid lockout timer to the Abbot raid, so it cannot be ransacked in a day.
10-04-07 Exploit is discovered to (slowly) beat the Abbot with no risk or challenge.
10-18-07 Abbot elite is beaten.
10-19-07 Abbot raid patched to be nearly unbeatable. Blatant exploit removed.
The challenges which originally had been a distraction are now obligatory (although players are not told this). The Abbot's special attacks become more dangerous: Encase is inescapable death, while Inferno and Phase Wraiths have doubled damage and deplete spellpoints. The first death penalty is added to DDO, imposing a non-expiring -10 penalty on all ability scores, in this raid only. The Black Abbot's personal combat stats improve (+8 AC, for example).
12-01-07 Players on Japanese server beat the Abbot raid. Date is approximate because reliance on exploits discouraged honest communication.
12-11-07 Parts of the Abbot raid are patched to be more managable. The ice puzzle becomes reasonably beatable, but the other challenges do not.
The mummies and death penalty are mostly removed (replaced with a new game-wide death penalty). A margin of error is added to the Ice Wands so that it no longer requires an internet miracle. The Phase Tiles are given a longer lifespan (10 sec), and a graphical warning before they fade. A long delay is added before the approach of Asteroids (which provides no help towards defeating it correctly, but does give more time to cast an assortment of exploitive spells). The Black Abbot becomes non-immortal once all three challenges are beaten, instead of only when all three are beaten at once (this doesn't matter, because whenever someones beats them it is in the same pass)
01-30-08 Shroud raid released. The questgiver dialog assumes that all characters flagging for the Shroud have already defeated the Black Abbot.
02-10-08 Abbot is beaten on USA servers for the first time since 'nearly unbeatable'.
04-23-08 An exploit which grants a minor chance to survive Asteroids is indirectly nerfed.
06-03-08 VOD and Hound raids are released, which require items from previous raids to unlock. The Abbot raid is notably not included.
06-03-08 The Phase Tiles are nerfed to be walkable nearly all of the time, granting a moderate chance to pass them by luck, although communication from the guide remains barely effective. (A completely brainless straight run has over 5% success rate, and even minor hints increase that)
10-22-08 Today, the one-year anniversary of the broken Abbot raid.