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This page provides information on Crumbling Vault event.
Trigger: Speak with the Treasure Hunter
Completion Details: Escape the crumbling vault before it collapses.
A treasure hunter will stand outside the portal to the vault and give the hero a bit of exposition on its existence. When stars align, the portal opens, and a foolish adventurer (the player) may enter for riches and treasure, or to die when the portal seals itself and the vault finally crumbles.
The crumbling vault is an exceptionally unique event in that it is the only timed dungeon in the game, and is also the only event a player can actually fail. There are multiple achievements related to this event which will be listed below.
Clicking on the portal to the vault will initiate a confirmation message, informing the player that it is indeed a timed dungeon. The timer begins once the player selects "ok" and is teleported in.
The vault has the same tileset and a similar layout to The Forgotten Ruins for the Zoltun Kulle quest to retrieve his head (titled Betrayer of the Horadrim). It's populated by many fallen, including shamans, stinging swarms, and also the guardian towers that litter these types of dungeons. Unlike many other events, the vault will have elite packs of monsters to contend with, and often, with certain boss modifiers, it isn't an easy matter to run past them in order to find the exit of the vault, due to properties like jailer or waller. The elites that spawn are also difficulty-appropriate, so it is best to be prepared for a fight.
The event will automatically end when reaching the vault treasure room (which has its own portal) or for taking the dungeon stone back to the stinging winds, thus completing the event.
Once you step into the Vault Treasure Room you can not return to The Crumbling Vault to collect loot or kill elites you left behind.
The vault treasure room features a resplendent chest and two normal chests.
While the vault will be crumbling, the player will not take environmental damage. If the player doesn't finish the event in time, a message will pop up informing that the hero has failed the quest. The player doesn't die, as was the original version of the event as seen in BlizzCon 2009.
 Associated Achievements
Crumbling Vault is in some way involved in the following achievement(s).
| Crumbling Vault
|10||Complete the Crumbling Vault event.||No Award|
| Crumbling Vault (Cooperative)
|10||Complete the Crumbling Vault event in a cooperative game.||No Award|
The Crumbling Vault achievement is required in order to complete the following achievement(s).
| Got Out
|10||Escape the Crumbling Vault before it collapses.|
| A Second to Spare
|10||Escape the Crumbling Vault in under 90 seconds.|
The video was taken with a high-level Wizard to show all of the achievements and to decrease amount of time spent in the dungeon.
|Quests & Events of Diablo III  Act I Act II Act III & Act IV Act V|
|Act II Quests||Act II Events |
|Quests Act III||Events Act III||Quests Act IV |
|Achievements General Campaign Cooperative Hardcore Classes Challenges Crafting Feats of Strength|
• Level 10 *
• Demon Hunter
• Stop Hitting Yourself
• Made to Order *
• Return Business *