Welcome to IGNs comprehensive Mass Effect 3 walkthrough! In this installment we do the side mission Valhallan Threshold: Prothean Data Drive.
We've collected every single walkthrough video in this handy playlist: http://www.youtube.com/watch?v=b8MJChLTX_g&list=PLE9A662E2ADBC192C&index=2&feature=plpp_video
And if you're just looking for side quests or achievement help click here! http://www.youtube.com/masseffectign
For more Mass Effect 3 tips and guides, check out our wiki: http://www.ign.com/wikis/mass-effect-3/Walkthrough
Keywords: Mass Effect 3, Mass Effect 3 (N7 Collector's Edition)
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