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After playing through the entire demo for the Darkness 2 I have a new found respect for this game. The art style is cell shaded like Borderlands and Prince of Persia. The aiming system is similar to Call of Duty and Red Dead Redemption how it will auto lock on an enemy if your cursor is close to someone. The blood and execution moves that you can do with the Darkness is over the top and makes you feel like the ultimate bad ass. You can restore your health from eating your enemies hearts once you kill them, and some executions combine a kill and eating a heart to keep your health up. You get to upgrade your abilities and Darkness powers from collecting Relics and earning Essence from getting kills.
[media] http://www.youtube.com/watch?v=ZY1V0SaiecI [/media]