You can use Anya’s portal in Harrogath to enter the Halls of Vaught. Key of Destruction: Defeat Nihlathak to get this key.You can find the Summoner in Act 2 at one of the four points in Arcane Sanctuary. Key of Hate: Defeat the Summoner to get this key.You can find her in Act 1 on the fifth tower of the Forgotten Towers in Black Marsh. Key of Terror: You have to defeat Countess and obtain this key as a drop from her.They are Key of Terror, Key of Hate, and Key of Destruction. There are three keys which you need to obtain in this event. This event isn’t difficult for no reason as you have to play on Hell mode to complete it. So here lets us see how to complete the pandemonium event. And if you can withstand all that you get to challenge the Boss trio. But that is not all you will also have to face multiple enemies. This event requires you to get keys and portals.
This is a collection of one of the most difficult and tedious missions in this game. Pandemonium event is a special event in Diablo 2 Resurrected.