 On December 10 , 2010 , the " Gigawatt Blade " which had previously been available only as a preorder incentive - was made available on the North American PlayStation Store as a free download . It was released in Europe on January 25 , 2010 . In the downloadable version of the game , they are packaged in . The Gigawatt Blade allows players to deal heavy amounts of damage with a melee attack . The shape and the color of the blade depends on your Karma , blue being good and red being evil ( red and black if the Ray Sphere is activated ) . Once activated , you can use it on an enemy for one hit , usually killing them instantly . It has 3 upgrades that are available in the Powers Store in the game , that can be spent using XP , each upgrade increasing the damage dealt . 
