Tip of the Iceberg - Use your Eagle Vision to scan a Glyph in the environment. A Piece of the Puzzle - Unlock a piece of Subject 16's video. Vitruvian Man - Unlock all 20 pieces of Subject 16's video. VidGamiac Social: Website:http://www.vidgamiac.com Facebook: / vidgamiac Twitter: / vidgamiac Google+:http://plus.google.com/10869537984546... X360A:http://www.xbox360achievements.org/pr... TrueAchievements:http://www.trueachievements.com/VidGa... Other Channels: Primary: / vidgamiac Unlocked: / vidgamiacunlocked Unlocked Extras: / unlockedextras