Interestingly, you have a radar that finds your "rival squads" -- people that have killed you the most online. This is cool because you can hunt them down. Conversely, you can form squads based on interests (age, hobbies, et cetera) so you can forge real friendships in and out of the game, which could lead to increased performance and whatnot while playing.
Co-op mode is "story light" -- not as many cinematics. With the class system, there's no auto-balancing, so if you're not careful (or particularly skilled), you might end up with a full party of Medics or something. You'll see lots of cars from the 1950's pop up, like Cadillac's or Thunderbirds. True secrets are kept pretty close to Price's heart, so you'll just have to wait for more information as Resistance 2 nears release.
