Call of the Void is all about darkness, specifically the void element and umbral monsters. Players can tackle the Umbral Escalation, a sort of randomized gauntlet that places you against all kinds of behemoths from throughout the game, perhaps with an umbral tinge to their movesets.
In Escalation, you get to select special abilities from encounter to encounter, so that adds even more variance to each run – you never know what you might fight, but you also never know if you will luck out with a rare skill. At the end of this Escalation event lies Thrax, an extremely dangerous umbral entity that moves fast, hits hard, and calls upon the void itself (hey, this might be related to the content update name!) to take down adventurers.
Thrax, while quite difficult, comes with incredibly powerful potential rewards. Over the course of this content patch, players can develop passive powers as they attempt to make it through the Umbral Escalation – so even if you’re not downing Thrax on day one, you earn a steady trickle of power that should make the gauntlet easier over time.