Warhammer 40,000: Space Marine All Cutscenes
Story:
The game's plot line involves the Forge World Graia (a planet devoted to military production) that has been invaded by alien Orks. The game follows a Command Squad of three of the Ultramarines, 2nd Company Commander and playable character Captain Titus, his immediate subordinate Veteran Sergeant Sidonus, and a relatively inexperienced and by-the-book Tactical Marine named Leandros. Initially upon arrival the squad provide assistance to the outnumbered and overrun Imperial Guard regiments fighting on the planet's surface, which after the loss in battle of all higher-ranking officers are now being led by the sole surviving junior officer, Second Lieutenant Miranda 'Mira' Nero; she informs Captain Titus of the present situation and briefly accompanies the squad to their next waypoint. Titus agrees to silence the captured planetary defense cannon which has been preventing supply ships from reaching the beleaguered defenders. This done, Mira thanks the Space Marines and continues to help Titus however she can over the course of the game, amidst re-organizing the remaining Imperial Guard forces and attempting to hold the majority of the invading hordes at bay until the delayed reinforcement fleet arrives. The Space Marines then move on to continue with their own mission and, amidst securing the Titan Invictus (one of a class of giant, bipedal war machines that are produced primarily on Graia and the principal reason for the Ultramarines' deployment there), answer a distress call from the injured Imperial Inquisitor Drogan, from whom they learn of a weapon that can wipe out the Orks, but which needs a power source that is located in a reactor below the Manufactorum. Titus retrieves it and activates the Psychic Scourge, but the Orks are not killed. Instead a Warp gate to the psychic realm of Chaos is opened, unleashing several daemons that massacre the surrounding Orks. Moments later, the Chaos Lord Nemeroth emerges from the portal. Using his Warp powers, he subdues the Space Marine squad as Inquisitor Drogan arrives via lift and approaches Nemeroth, revealing his allegiance to the Chaos Lord. It is then revealed that Drogan was killed at some point prior to meeting Titus and his corpse was possessed and used by Nemeroth as a sleeper agent. Titus gathers enough strength to grab the Power Source, which had been ejected from the Scourge, and Nemeroth is ambushed by Grimskull, the Ork Warboss in charge of their invasion of Graia, allowing the Space Marines to escape.
The Scourge opened a growing Warp portal around the Orbital Spire, allowing Chaos forces to pour in; seeing this, Titus forms a plan to destroy the portal and the Spire by using one of the Titans they had secured earlier (their original mission). The Titan Invictus is brought to full activation by the Power Source, and destroys the Spire. However, Sergeant Sidonus is killed by Lord Nemeroth, and the Power Source is stolen and taken to the floating remains of the Spire.
The reinforcement fleet now having finally arrived, including a company of Blood Ravens Space Marines as well as the rest of Titus's company and large numbers of Imperial Guard, Titus leads them in an attack through the remaining Chaos forces to stop Lord Nemeroth from performing a ritual to ascend to the status of a Daemon Prince using the power of the device. Nemeroth has partially ascended to Daemonhood when Titus finally faces him again; both are knocked off the spire in the struggle, and the Captain defeats him in single combat while falling towards the ground. He then breaks the experimental device in half with his hands. Titus survives the exposure to the raw Warp energy again, and is rescued by a Thunderhawk dropship before he can impact the ground. The end scene of the game involves a new Imperial Inquisitor by the name of Thrax, accompanied by Leandros and escorted by several Black Templar Space Marines, who places Titus under arrest. Leandros believes that his Captain has been corrupted by Chaos, based on his resistance to warp forces. Titus denies accusations of heresy and is backed up in this by Lieutenant Mira who also protests the accusation, but Titus warns her to back down, knowing the extent of the Inquisition's wrath. Titus is willing to find the cause of his own mysterious resistance to Chaos, and voluntarily goes with Inquisitor Thrax on the condition that the Inquisition leaves the planet, its inhabitants (including Mira) and his fellow Ultramarines alone.
Source: en.wikipedia.o...