this game is good only if you have a friend to play with..
this games worths a rental but only a rental, because the campaign is short, and there is not a lot of people playing it online plus, if you play it online or in campaign is actually the same tactics over and over again.
to me the game focusses to much in the aggro system, dont get me wrong its nice and innovative, but taking adventage of it the whole game is where it looses some of its fun.
if you liked games like kane and lynch, stranglehold, Gears of War, etc you might like this one because its a good 3rd person shooter but multiplayer like kane and lynch, the only difference between Ao2 and K&L is that this one makes work you and your partner as a team.