Free Total War: Warhammer 3 DLC releasing alongside Chaos Dwarfs detailed

pcgamer.com:

I'm pretty stoked for the Chaos Dwarf DLC that's coming to Total War: Warhammer 3 on April 13, but that's not the only thing to look forward to if you're a hammer-head (a Warhammer nerd, that is, not a kind of shark). As Creative Assembly explains in the latest Total War blog(opens in new tab), the Chaos Dwarfs will arrive alongside update 3.0 and a free add-on called Mirror of Madness.

Mirror of Madness contains a pair of game modes that will be added to the Battle menu. First is The Trials of Fate, which expands on Warhammer 3's survival battles to make a mini-campaign in which you play a time-traveling daemon prince of Tzeentch. You'll have to survive four battles from the history of Warhammer, then defeat Tzeentch's faction leader Kairos Fateweaver. 

It's a kind of wave defense mode where you hold a capture point against endless enemies who get stronger the longer the fight goes on. You'll get «unique spells and abilities» to help, and holding that capture point gives you forbidden knowledge that upgrades those spells and abilities, which include «cataclysmic powers and mighty vortexes to send your enemies ragdolling across the Realms in crazy physics-based chaos.» Scoring well in The Trials of Fate unlocks new Tzeentchian daemon parts you can bolt onto the DIY legendary lord you design when playing the Daemon Prince in either the Realm of Chaos or Immortal Empires campaign.

The second half of the Mirror of Madness is The Infinite Portal, which will sound familiar if you remember the skaven-themed Laboratory mode from Total War: Warhammer 2. It's an experimental sandbox that lets you tweak settings and play one-off battles with resized lords and monsters, increased collision force and damage, more blood, less