
The scariest monster in 1.00 bar none is 'Lord de Seis', he can literally crash your game and corrupt your character file ending your Classic experience just like that. Fruit settles it with a proper explanation. There are currently no reports on what happens when such a character is forwarded to the expansion and it is not known when this bug was fixed. If X = Hell then the only thing that can be lost is access to the 'Secret Cow Level' in Hell. (This is possible only because the game stores quest completion data and difficulties unlocked in two separate places)
Since completing that particular quest is the only way to unlock the next difficulty this means that character A is now permanently stuck in difficulty Y.
Character B talks to Tyrael at the end of act 2 in difficulty Y while character A is present in 'Duriel's Chamber'Īs a result the game will forget that character A has gained access to difficulties higher than Y but it will not forget that character A has completed the 'Terror's End' quest. Character B has not yet received credit for talking to Tyrael at the end of act 2 in a difficulty Y where Y is at most X. Character A has completed the quest 'Terror's End' in difficulty X. This is a multiplayer bug with the following setup: Also if you know anything about the unconfirmed bugs listed at the end of this posts please tell me! All corrections and additions (in the spirit of the first two sentences of this post) are welcome. This list is neither exhaustive nor is it completely accurate. (In particular Classic 1.07+ is basically the Wild West with only one forum member known to frequent it as a consequence Classic and LoD are separate in this guide and Classic 1.07+ is ignored completely) Whenever possible I tried to give a precise window of patches during which each bug persisted but in some cases there is not enough information available to achieve this. The order in which the bugs are presented is not necessarily chronological nor inspired by their severity - however Classic bugs are listed before LoD bugs. The majority of bugs in this list are crashes and the losses are incurred by the rollbacks they cause. This includes all bugs which lead to loss of items, progress or even entire characters.
This is meant to be an up to date collection of all 'gamebreaking' bugs in D2 ranging from patch 1.00 to the current patch 1.14d.