Space Hulk: Deathwing is slated for release on the PC in just two days (December 14). Of course, that means there is a new launch trailer for you to watch and some basic game details that you can read so you know just what in the world is going on.
Space Hulk: Deathwing is a first-person shooter based on Games Workshop's classic Space Hulk boardgame, set in the universe of Warhammer 40,000. Developed in Unreal Engine 4, the game tasks you―in an extensive solo campaign co-written by Black Library author and Dark Angels specialist Gav Thorpe, or a challenging co-op mode up to 4 players―with facing the Genestealer swarms in the depths of a gigantic amalgamation of interstellar debris and wrecked spacecraft know as a Space Hulk. Unlock and equip yourself with the most powerful weaponry available to the Imperium, master destructive Psyker powers, and command your squad mates in battle to defeat the Xenos threat.

This trailer shows off members of "1st Company of the Dark Angels (preparing) to board the gigantic, Genestealer-infested Space deposited in Imperial space by the uncaring tides of the Warp."

All you really need to know is that this is a bit like Left 4 Dead and Warhammer: End Times - Vermintide and a lot of things will get shot or shoot at you. You can pre-order the game through Steam for 15% off up until the game's release.