Melee combat never looked that hot in Fallout 3 unless you used the unappealing third-person view. Fortunately, Obsidian has fixed the camera so that playing in third-person isn't just possible, it's preferable. The camera is now tight on the hip of the character instead of showing their poorly animated legs. This is a more traditional camera for a third-person action game and it makes a big difference in terms of playability. Obsidian is throwing in tons of wild and crazy looks and outfits that you will want to see in the third-person view.
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