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Before the fight against the DomZ robot in the factory, the player finds Pey'j being transferred to the slaughterhouse by the Alpha Sections. On his right arm, it's possible to spot a tattoo that resembles The Comedian's "Have a nice day" badge from Watchmen.
Contributed by ProtoSnake
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Canadian cheese brand, Cheese Heads, once bundled free copies of the PC version of the game with each pack of cheese sticks.
Contributed by gamemaster1991