There's a new high res video from GDC posted at the official Hellgate:London Website. The file is quite hefty at around 90MB but its a close look at some of the subclasses that will be avilable in the game, notably the blademaster and guardian. The blade master is , skillwise, looking like the Barbarian from diablo 2 while the guardian is your typical melee with shield character such as a paladin.

here's a low res youtube video: