I was playing it on Holiday, and beat it on medium (cant remember the name

) with my brother, downloaded the free map pack and, uh, got bored.
I found that the firing was far far to accurate. I could get a clean headshot blindfiring from across the map, because the blindfiring was pretty much the same accuracy as not blindfiring.
And sure, step jumps and the like are novelties, until you get caught on top of one without pulling your buddy up and the two of you are sittign there, waiting for the one on top to bleed to death.
And the characters were highly stereotypical, especially the Irag boss, who picked up a mini-gun and screamed "For Saddam".
Damn, I have a lot of rants about Army of Two, but I will admit its not a bad game. Live isn't much good, but splitscreen co-op is nice.
single player isn't as bad as people claim. hell, I quite liked my partner. When I picked up a riot shield in splitscreen, my brother got out his mini-gun and killed everyone while I sat there waiting for him to hurry up and get behind my cover. When I picked it up on single, the good little AI man came up like a little servant and sat there covering me while I happily harvested the shielf melee kills for my achievement