S.T.A.L.K.E.R.: Shadow of Chernobyl
By this point, Strelok had become a serious threat to the security and secrecy of the C-Consciousness lab and the entity contained there, and it was decided that Strelok must be killed. However, due to unknown factors, C-Consciousness made a mistake: not realizing the identity of the man who had been caught in the blowout, they attempted to program him to kill Strelok, when in fact the man was Strelok. A second accident, the chance destruction of the Death Truck meant to carry this new agent back to the outer Zone, resulted in a loss of C-Consciousness control over him. Strelok was a free agent once again, though confused, amnesiac, and stripped of his possessions. The mission to kill himself led Strelok to retrace his steps through the past few weeks, tracking down his old associates and, over time, putting back together the evidence that had led him to become a danger to C-Consciousness in the first place. With the help of Doc to reveal his identity and to point him in the direction of a backup cache of documentation and another electronic lock pick, Strelok returned to Chernobyl and penetrated to the chamber under the "Monolith," destroying the projection device that created the illusion.