Successfully complete season one in any mode on the extreme difficulty setting with a championship truck to unlcok the Dog Pound.
Game Shark Codes
Master Code (Must Be On) 0E3C7DF2 1853E59EEE873702 BCC498EA
Infinite Money DEA98D02 C19E7B82
One-Hit Kills With Flamer DE9D7666 0DA99B83
One-Hit Kills With Machine Gun DE9D767E 0DA99B83
One-Hit Kills With Pulse Gun DE9D760A 0DA99B83
One-Hit Kills With Lighting DE9D7626 0DA99B83
One-Hit Kills With Shotgun DE9D7632 0DA99B83
One-Hit Kills With Railgun DE9D76CE 0DA99B83
Unlock All Cars BE9FD93E BCB99B84F0FDFCF9 BCA99B83
Disable AI DE8DD9E6 BF899B8BDE8DD9E2 BCA99B83DE9D7196 BCA99B84
Hold X + R1 For Super Jump 0E934838 BCA95282DE9D702A FA299B830E934838 BCB95282DE9D702A FCA99B83