Rifle selection:
When selecting your rifle in action zone, it is best to get an automatic. You will be 
able to shoot faster and will not get attacked as much.

Lighter weight to carry:
Choose everything that you want for your equipment, and do everything else 
based on the game type. When you choose "Hunt", press Black, choose the 
heaviest thing, and press A. Then, do this repeatedly. When you have taken out 
everything, put everything back. When you run, it takes it down much slower as if 
you have nothing. 

Unlock X-Ray Scope 
Clear the game on any difaculty to unlock x-ray vision while using the scope.