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Half-Life: Opposing Force Expansion Pack cheats / Half-Life: Opposing Force Expansion Pack hints / Half-Life: Opposing Force Expansion Pack faqs / Half-Life: Opposing Force Expansion Pack solutions Half-Life: Opposing Force Expansion Pack hints Hidden Audio Approach the Boss of Opposing Force to hear backwards audio composed of the phrase "To win the game you must kill me Randy Pitchford" when played correctly. Randy Pitchford is the leader of the development team at Gearbox Software. Other Half-Life: Opposing Force Expansion Pack cheats hints faqs solutions: 1. Half-Life: Opposing Force Expansion Pack cheat codes 2. Half-Life: Opposing Force Expansion Pack cheat codes 3. Half-Life: Opposing Force Expansion Pack cheat codes 4. Half-Life: Opposing Force Expansion Pack cheat codes 2. Half-Life: Opposing Force Expansion Pack hints 1. Half-Life: Opposing Force Expansion Pack faq and solutions |