I just got it and it's pretty fun, gonna try to jump into MP Hardcore this evening, if anyone wants to come along that'd be great (probably from about 8pm till midnight tonight and tomorrow)

I have it and play it, but I don't play HC.
Sorry, bud.
There's some friends I know who play HC but they all have international copies of the game, so as of this post it's impossible for North American copies to play with international ones.