Left 4 Dead Cheats[ XBOX 360 ]
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Secret - Destroy the Gas Station on No Mercy
On chapter 3 of the 'No Mercy' campaign, you come across the part with the gas station. If you shoot the pumps of the station with any weapon, even a pipe bomb, it will explode and burst into flames. Just make sure your away from the gas station and the pumps once it explodes, or you will take major damage.