As everyone else has already said, the story is simply terrible. That said I still enjoyed the single player campaign, it managed to maintain a good atmosphere throughout and i enjoyed the sense of scale given by the huge military campaign you are involved in. Currently playing on hardened and think I'm near the end now.
As for the multiplayer, I have a few issues with the fact that some games are still laggy (if I can play Killzone 2 without lag I don't think it's asking too much to be able to do the same here) and I don't know if it's just me but the hit detection seems to be a little funny. Watching killcam (and in particular the final kill video) I'm sure hits are being registered when people are not even aiming at me? Haven't really got a feel for the maps yet and am still unlocking weapons so haven't really got a favourite. Those complaints aside, the online aspect is still hugely addictive.
Special Ops are a nice addition, largely for allowing some sort of 2 player co-op.
