Ok guys scrap every bit of pessimism i've expressed at game length
This game is going to have a sick amount of replay value. On Hard this game feels like some fucking barbarian ballet, sweeping and swooping rocket sliding about to the rhythm of the battle in a beautiful symphony of bullets. The flow of this game is just incredible. Never has the simple details of combat been so fun in a third person shooter.
This is the ultimate high octane arcade game for modern consoles. If this was in an arcade, I would have sat glazed eyed in front of the cabinet for days on end, drool slipping out the side of my mouth like a lobotomy patient. With the score system in place, it's just amazingly satisfying... the replay value comes not from the different scenarios in battle, but from the different ways you take down those same scenarios. I cannot fucking waaaaaaaait to see what the leaderboards look like for this game.
Any asstard who says this game only has 4 hours of value needs to stop reviewing games. This is actually a lot more like Mirror's Edge in terms of structure then let on: the goal isn't to merely get through the campaign, it's to fucking master every moment until you're the damn most brilliant, lightning quick combat dancer known to mankind. You'll be replaying this shit over and over if you know what's good for you.