The video shows the main plot of the game "Space Hulk: Deathwing". The game has only 10 minutes of in-game videos. Therefore, all the rest of the video (with the exception of the initial and final cutscenes) is made from video footage of the gameplay.
I tried to make it as cinematic as possible without a free camera (fly camera). The entire interface and dialogs were removed from the game. The sequence of dialogues and in-game events has been changed for the integrity of the plot.