Dead Space 3 - Full Collectable Walkthrough - Chapter 4: Optional Mission CMS Greely

IGN's shows you all the collectables in the Optional Mission: CMS Greely in Dead Space 3. Subscribe to IGNs channel for reviews, news, and all things gaming:http://www.youtube.com/subscription_center?add_user=ignentertainment Subscribe to IGNs gameplay channel for walkthroughs, guides, and gameplay videos:http://www.youtube.com/subscription_center?add_user=igngameplay