Picked it up this morning, and having not played the first game, I have to admit to being surprised by this game. I wasn't expecting a straight-up shooter, but that's what I got. Granted, I only played for about three hours, but unless it changes drastically at some point, there's not much on offer here. And someone said the game is only three to four-hours long? Damn, I must be nearing the end, then. Had I paid $15 for it off of PSN, I'd be plenty satisfied with the game; hell, I'd be raving about it. Thus far, however, it's hardly a $55 (what I paid at Walmart) game. Looking forward to tinkering with the co-op and other modes, but still...