The game is set some time after a catastrophic
comet impact, which brought a deadly
virus onto the planet. In the resulting plague, millions of people died, while other victims became mutated and began hearing the voice of a malevolent deity. They formed an organization called "The Order" and enslaved the rest of the populace, but a rag-tag resistance movement, called "The Front", is trying to topple The Order's reign. The unnamed
protagonist of the game is a wandering mercenary, captured by Order troops near the town of Tarnhill. After killing the guards and escaping, he meets a man named Rowan, who makes him an offer to join the Front. The protagonist receives a communication device through which he remains in contact with a female member of the Front, codenamed Blackbird. From then on, Blackbird provides assistance and commentary throughout the game. The protagonist heads to the Front's base, where the rebel leader, Macil, sends him on a number of missions in order to weaken the Order. After several acts of sabotage, the Front proceeds to assault the Order's castle. The protagonist, accompanying them in the attack, kills a major member of the Order called "The Programmer". He loses consciousness upon touching the weapon that the Programmer had been using. The mercenary wakes up in the castle, now taken over by the Front. Macil explains that the Programmer's weapon is one of the five fragments of the "Sigil", a powerful weapon worshipped by the Order. He orders the protagonist to find the remaining four. To this end, the mercenary visits a knowledgeable being called "The Oracle", who reveals that the next fragment is being held by another of the Order's leaders, The Bishop. After killing the Bishop and acquiring the second fragment, the protagonist returns to the Oracle, only to be told that the third fragment is being held by Macil himself; the Oracle claims that Macil is a traitor who has been using the protagonist as a pawn in his scheme. At this point, the player must make a decision: either disbelieve the Oracle and kill it, or trust the Oracle and kill Macil. This choice affects the rest of the story. If the player trusts Macil and kills the Oracle (acquiring a Sigil fragment it was holding), he receives another task from Macil: to deactivate a factory, built on the comet's impact site, where the Order is turning captured people into "bio-mechanical soldiers". Upon completing his mission, the protagonist learns that Macil has gone insane; he returns to the base and attempts to speak to Macil, who declares in his madness that he wishes to free the "one god", then attacks the protagonist. Upon killing Macil, the protagonist obtains his Sigil fragment. He then returns to the factory, where lies the laboratory of the Loremaster, another of the Order's leaders. After killing Loremaster and thus acquiring the final Sigil piece, he uses the Sigil to unlock a door leading to the comet's impact site. Inside, he finds an extraterrestrial
spaceship. Within the ship waits an
alien being known as "The Entity"; it is the one responsible for creating the Order and taking over the minds of mutated people. The mercenary kills it with the Sigil; its death means the end of the Order. He then finally meets Blackbird face to face. She tells him that his victory allowed mankind to create a
vaccine for the virus, then kisses him. The plot takes a different direction if the player decides to trust the Oracle and immediately kill Macil. Once he does so (claiming Macil's Sigil piece in the process), the Oracle dispatches him to the Loremaster's laboratory. Having killed the Loremaster and obtained his fragment of the Sigil, the protagonist returns to the Oracle, who then reveals that it was using him all along in a bid to acquire the complete Sigil, use it to free the "one god", and attain eternal life. The mercenary kills the Oracle and, with all five fragments of the Sigil now in his possession, heads to the alien ship. There he encounters the Entity, but the being speaks with Blackbird's voice, and implies that it was manipulating the protagonist throughout the game in order to regain freedom and take over the planet. After killing the Entity, the ending sequence is shown, this time less optimistic: the cure for the virus has not been invented and mankind's future is uncertain. ==Development==