Metal Gear Rising: Revengeance tries not to waste a moment of your time. In the 4-6 hours required to complete its campaign, you will cross the globe, have sword-fights with skyscraper-sized mechs, team up with an A.I. dog, explore a science facility with a remote-controlled robot, leap over missiles to chop up helicopters, and fight a metaphor for American evil. Rising is as silly as it sounds, and it knows it.