Hub 5: Dark Crucible

Dark Crucible is the final level in Hexen. It is where you face Korax himself, along with an army of his minions. Although it is part of the Necropolis hub, you cannot return to any of the other levels once you have entered it.

Walkthrough
The player begins on one side of a waving bridge. Cross the bridge (while avoiding falling off to instant death) and open the door. Inside and up some stairs, there are three switches: one to the immediate left, and two on the walls near the door. Begin by pressing both switches nearest to the door, then the switch closer to the entrance. A random type of mana, possibly even a Krater of Might, will appear next to the two switches near the doors. Doing this every fifth time after the first (ie, 6th, 11th, etc) will cause four Dark Bishops to appear. The player can decide whether or not it is worth it to gain mana at the risk of losing health (as they will need to keep up their strength for Korax). Open the door when ready to battle Korax

Once Korax is dead, a portal will appear at the back of the room. Enter it and watch the ending sequence.

Congratulations, you win the game.