Full Control says the third expansion for Space Hulk: Ascension is live for Mac OS X, Windows and Linux on Steam. The Dark Angels Expansion "Bringer of Sorrow" unlocks the Deathwing of the Dark Angels Chapter and includes a further 20 story missions, and 20 flash missions for players to conquer.
 
Here's how it's described: "Plasma Cannons shoot out huge fireballs of glowing plasma that splash across large areas, causing insane amounts of damage. They can be overcharged for additional splash damage. The Apothecary is a support class that complements players command slot in their squad, and bolsters the resolve of nearby Terminators and supports defensive play styles.
 
"Based on the best-selling board game set within the Warhammer 40,000 universe, Space Hulk: Ascension, is a 3D digital turn based strategy game, that features reworked mechanics and a host of new features, including RPG progression mechanics, new Genestealer variations, new rules, and mission structures."
 
To purchase the Dark Angels Expansion via Steam visit: http://store.steampowered.com/app/347981/