Unlocked tonight using a vpn, for anyone who is interested:
- preload the game
- download and install http://openvpn.net/
- rightclick in taskbar and turn it on
- re-open steam and click play (it will unlock)
- turn off vpn and uninstall it (optional)
then you're good to go
Had a 40 min screw around with 3 mates on a lan, we couldn't get the ingame friends list to show up and the join mechanic seems pretty stupid, you start a single player game and then have to open the lobby and invite people. Even once we were in the same game i couldn't make friends show up in the lobby.
Two out of the 4 players got a "this quest will not be saved to your profile" warning when we started the game and none of their stuff saved when they left, they didn't do anything different to the other friend who joined and had no problems.
You don't seem to be able to track any quest except the main questline (it actually says "you cannot track a side quest in co-op"), they better be fixing that fast or it will cut the game in half.
The gameplay itself seems pretty fun so far although we're only level 2 so i guess time will tell.