Easy Money and Experience
During the tour at the start of the game follow the robot to the small campsite with the raised car next to the burning tires. On the way there collect ALL the guns and money and kill ALL the enemies. When you have done this pause gameplay and select 'Exit' and your character will be saved with the current items and experience then load the saved game so you start at the beginning again and repeat the procedure as many times as desired.
Added by: Sanzano Dec 14th 2010, ID#6716