Recently I read about an Assassin class, and I'm intrigued. I'm not very familiar with it yet, but I'm wondering what weapon best suits an Assassin? I mean, from a roleplaying point of view I would pick the dagger or katar, but from a damage output perspective what is the best weapon for an Assassin?
Because the assassin has access to the Ki focus, enchantment is left to the ki meaning your only selection is in the weapon die and properties you'd like it to have.
Things you should be thinking about
By default as an assassin you get access to
There is a pretty extensive list of weapons here, particularly in the heavy and light blades (rapier, falchion, broadsword, glaive, longsword, greatsword). I'd start with grabbing a couple from this list (definitely rapier/long sword and probably a glaive, maybe a greatsword just to have a nice punchy option). Then grab an item or two off the simple one handed melee list, although most of the options are trumped by heavy blade options, however if you've got a story or feat/power issue that would provide a good reason to take something off the simple one handed-melee list, go for it.