Go to Face Transplant shop and select redeem code While Selecting Face Skins.
Code
Effect
ELECPLAY
Electric Playground TV Hosts.
MOJANG
Mojang Staff.
POWER
Nintendo Power Staff.
URNOTE
Playstation Blog Staff.
POLYTRON
Polytron Staff.
Various Gameplay Tips
Tip 1: When you're locked on a target you can move around and keep firing at your aim.
Tip 2: If you fire when you're in cover without pushing a direction you'll fire down the screen.
Tip 3: Do what you're told in the stealth sections.