Borderlands - Mad Moxxi's Underdome Riot

Cheat Codes:
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Submitted by: David K

Sucker Born Every Minute Achievement/Trophy:
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The description for the Sucker Born Every Minute Achievement/Trophy says
"Paid for a worthless tour of the world's largest bullet." Go go the huge
bullet and there should be a building closest to the bullet. 
There will be arrows pointing to a box with a $ sign on it. Simply activate
the prompt here to get the Achievement/Trophy.