Halo 4: Spartan Ops - Legendary Playthrough - Episode 2 Cinematic IGN's legendary playthrough of 343 Industries Halo 4: Spartan Ops. Episode 2 - Artifact An artifact brought onboard Infinity endangers the crew. 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, Spartan Fireteam, Fireteam Crimson, Fireteam Majestic, Spartan, Paul Demarco, Madson, Hoya, Grant, Gabriel Thorn, Jared Miller, Commander Sarah Palmer, Sarah Palmer, Captain Thomas Lasky, Thomas Lasky, Roland, Ep 2, EP:2, Cinematic