The game is awesome. I think it's really similar to diablo 2. It goes like this; there are stations/safe zones that you can go to for selling, buying, upgrading, quests, and so on. Each station has a transporter (Waypoints!!) that you can use to teleport between stations you've already been to. Each time you enter a zone or area outside of the station, you in theory create your own game (sounding more like d2 now?). When you are in a group and clearing out zones, all drops are personal. When i say personal, I mean that when a mob dies and drops loot, each person is given their own items. This eliminates the loot whoring factor and allows each person to progress equally. Therefore, stations being the chat channel but having way more things to do while there, and entering zones being someone creating a game, is pretty much what diablo 2 is.
I really like the game so far and encourage you to atleast download the demo and try it out. You can only go to level 5 in the demo but you can still go kill shit after that for loots. I play an Evoker (dmg caster) and i absolutely love it. It's worth the time to atleast try out the free demo. Just type in "Hellgate: London demo" in any search engine or go to
www.Hellgatelondon.com and download the free demo there.
Enjoy!