Send us a link to d/l the demo and we will start working on the trainer.
It can be downloaded only from steam (as far as I know) by inserting the gamespot key in the "Activate a Product on Steam" box.
I got my "early access" code from Gamespot, I tried out the demo version and not long after that the full version was released.
Yes it has both single player and co-op player missions.
The co-op is only local, though.
The online one will be released at the end of the month, with a DLC.
Not only, that, they want to release 5 other dlc...