Though it’s a shame, I had a group of 4 players including myself on PSN trying to take on the tank aiming for S rank. The best we managed was A rank, 5:54, no kills.

PS3’s Adhoc Party is great, it lets you connect the PSP to other players as if they were in the same room. Of course, voice chat/USB keyboard is supported, and you definitely want voice chat to be able to communicate effectively (these are supposed to be adhoc games, after all). There are a few bugs here and there with the interface, sometimes the network lags but it’s overall really cool.

Anyone want to post their experiences?