First and foremost you need to be able to make stuff bleed because you need to be able to flee and re-engage big mobs to finish them off, but you don't want said big mob healing too much. For this role, I suggest dagger. Daggers are light so you can carry a variety if you want and you have lots of maledicts.
For the second spec (or really the first.. I wouldn't take dagger as a first spec) you want something that does good damage and is reasonably defensive. In this case I'd suggest swords or maces. Sword probably wins but it can depend on your playing style and game knowledge.
Beyond that you really just gotta pick whether you want to be a dexy race (elf, drow, arial) or giant race.. which also will depend on your play style and such.