Halo 4: Spartan Ops - Legendary Playthrough - Episode 2 Chapter 2 IGN's legendary playthrough of 343 Industries Halo 4: Spartan Ops. For Science An Infinity Science team issued a distress call, then went silent. There has been no contact since. Objectives - Discover status of missing science team. 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 TAGS Halo 4, Spartan Ops, IGN, IGN Gameplay, IGN Entertainment, Video Games, Games, Gaming, Gameplay, Guide, Walkthrough, Playthrough, Xbox 360, Episode 2, Artifact, Chapter 2, For Science, Spartan Fireteam, Fireteam Crimson, Fireteam Majestic, Spartan, Paul Demarco, Madson, Hoya, Grant, Gabriel Thorn, Jared Miller, Commander Sarah Palmer, Sarah Palmer, Science Team, Ep 2, Ch 2, Multiplayer, Co-Op, Co Op