Hidden codes
Go into "Extras", then "Deleted Scenes", and press Right (by default "Commentary - On" will be highlighted) to reveal a hidden 1Up icon. Press Enter for the "Noble Sacrifice" code.
Go into "Extras", then "Pre-Production", then "Animatics". Highlight "Original Zoetrope Concept" (top of the second screen), press Right to reveal a hidden 1Up icon. Press Enter for the "Twin Characters" code.
Go into "Extras", then "Music Promos", then "OSYMYSO Remixes", highlight "Ramona", and press Right to reveal a hidden 1Up icon. Press Enter for the "Enable Love" code.
Go into "Extras", then "Blogs" (middle of second screen), highlight "Blog Six - Fight!", and press Right to reveal a hidden 1Up icon. Press Enter for the "Survival Horror" code.
Go into "U-Control", highlight "Storyboard Picture In Picture - Off", and press Up to reveal a hidden 1Up icon. Press Enter for the "Free The Animals" code.