Begin game play, and switch to the wilderness tracking view. Press Ctrl + Enter then 
type pb and press Enter to activate cheat mode. To enable the remaining codes, press 
Ctrl + Enter during game play. Type one of the following codes, then press Enter to 
activate the following cheat.

Result:             Cheat Code: 
Full health         dandy 
Maximum speed       zoom  
Maximum cover       casper  
Double inventory    warhole