Ah, well, in a nutshell, the House is a group of likeminded individuals, allied with the Horde, whose sole purpose is absolute chaos.
So its a lot of intimidation, specialized land combat and fast moving vehicles, with a side of insane Force users and non-Force users.
The Lunatic Fringe, if you will.
Main targets being the Republic, the OP and the Moross Crusade.