GamesRadar - To access the VR Missions, Upgrades, and Concept Art that are available in Metal Gear Rising: Revengeance, youll need to find the associated collectibles to unlock them. The collectibles range from VR Cases, to Data Storages, and even some enemies left arms. Yep, their arms. Some of these collectibles can be downright dastardly in their locations and can only be found when the proper route is taken to reveal them.
via N4G: pc news feed http://n4g.com/news/1176573/metal-gear-rising-revengeance-collectibles-guide
via N4G: pc news feed http://n4g.com/news/1176573/metal-gear-rising-revengeance-collectibles-guide