Light Weapon Master

You are a master of light weapons. 

It's all in the Technique

You can use a light weapons to sneak attack. When you do so the sneak attack dice become d8s.

Fighting Style of the Streets

Starting at 3rd level, you select one of the following fighting styles Blind Fighting, Defence, Duelling, Two-weapon fighting, Thrown Weapon Fighting or Unarmed Fighting

Extra Attack

Starting at 9th Level, when you take the attack action you make 2 attacks instead of 1.

Deadly Followup

Starting at 13th level, you become more deadly with follow up strikes. enemies within 10ft of you become vulnerable to damage from your light weapons, bypassing resistance .
If a creature is immune it will be treated as having resistance.
This ability only triggers when a sneak attack would not.

Fatal Blow

At 17th level, as an action you can make a single attack, on a hit your weapon damage dice are quadrupled.
If sneak attack applies treat all 1's as 2's on your sneak attack dice rolls.
The sneak attack dice are not quadrupled