Legit review....
What are you expecting?
This game is actually really good - and I'm pretty picky. If you're an average gamer and you're looking for a good game, I highly recommend this one. It's a lot of fun. My first recommendation is to find a buddy and play online - doing so makes this game a friggen' blast. I played with a good friend last night and it is an awsome (maybe of the better) to play online.
That being said, the single player campaign is just right. It's pretty hard but not in a bad way. The aspect I like the most is the way the saving/checkpoint system works. If you die your AI partner will revive you. Unless you both die, you can pick up right where you left off. If you DO both die, the save spot is usually pretty close to the area where you died.
This game is straight up, a lot of fun. Give it about 4 hours to really get into. Once you do, you WILL like it. Like I said, I'm pretty critcal of games and this one is solid.