Guild Wars 2

Currently only level 13, enjoying using C&D and Backstab.
Think this is the build i’ll aim towards, ultimately using Berserker armor with some toughness/vitality from either runes or trinkets:

http://tinyurl.com/a3hv932

Any obvious mistakes or improvements to be made?

I’d swap Haste for Blinding Powder, and swap signet of agility for just about anything else that’s a stun break. Shadowstep would be a great choice, Infil. Signet or Roll for Initiative also work well.

In shadow arts I’d swap Patience for Shadow’s Embrace. Otherwise cripple and chill will ruin a lot of your backstabs and allows just about anyone to kite you down. Also anyone or anything that throws lots of conditions your way is going to kill you and there won’t be much you can do about it. Plus, you’re likely not going to be spending that much time in stealth as you’ll probably want to backstab as quick as possible anyways.

Other than that it looks pretty good.