Check out the video above, it shows how Assassin’s Creed: Brotherhood players can play with a Raiden outfit, and adding a very MGS-y feel to the experience. Apparently, you have to do some specific stuff in the tutorials to unlock the outfit.
We certainly loved Brotherhood, Raiden or no Raiden. We recently reviewed it, and gave it a whomping 9.5/10.
The game certainly has been selling very well. It sold 1.14 million units in its first month, in US alone.