The only thing this game missed, was throwing darts, to make a really good ninja based build. Throwing iron scraps at low lvl that inflict pain or confusion then at higher lvls or skill talents poison or bleed
The dagger is the rondel dagger, pretty basic, you can find it anywhere (enemy drops, merchants). The armor is the Katzite set that you have to pass through the legacy chests.
The backpack allows to dodge without the penalty, there are a few like that. Edit: sorry, this one is not one of those backpacks, I have the skill that allows to dodge using any backpack.