Underground Path

Underground Path is accessed from the teleport orb in the first hall of the Darkin Temple.

First Phase
There are many Golems, a Golem Queen and two Knights guarding the passage to the second part of the level. However, it is possible to take the passage without killing the enemies.

Second Phase
Entering the second part of the level triggers Boris' cinematic, in which he says the following: "See what beasts they've reduced us to... Creatures of flesh sustained only by this filth's blood and form! I shall take their limbs. I will reap their beloved! I will tear from their consciousness, the will to live. Yes... This is my purpose. This is not a duel you shall win."

A boss fight with Boris ensues. Dropping him below half health activates his ultimate, increasing his power and giving him health regeneration. Killing him unlocks the second hall of the Darkin Temple. Getting killed by him returns the player to the first phase of the level.