to be honest I don't think the online is that great,
but the storymode is replayable over and over because you can always do things in a different way.
i said not bad. Boring story mode (to me at least) and multiplayer isnt to my taste. Got boring pretty fast. Its just to similar to the first in everyway.
Oh and the FPS drops in the campaign are unforgivable on a console. At least when it happens on a PC it just means you have the graphics settings to high. On this your stuck with it.
Linear Mode
