Its an awsome game, just keep playing, its hard at some point I was like wtf is this, they just keep coming, love the system when you have to gain territory.
I better like it than MW2 thats for sure, online owns.
My favorite games for this gen:
1. Gears of War 2. MGS4 3. Killzone 2 4. Halo 3(Underated by many) 5. Mass Effect