It all comes together when your quarry finally settles into the crosshairs. First there's the insistent nagging tone of a "lock-on." Then that feeling of release as you thumb the controller and a pair of rockets drop loose and jet forward. Finally you're rewarded with an explosion of debris (that's not to mention the pocketful of experience points you take home for each kill). It feels good to win a fair fight. It feels even better when the guy had it coming.