Enforcer

In the criminal underbelly of the world not all use their cunning and guile to get by. Some especially dangerous individuals use there overwhelming strength and presence to rule the underworld and keep the law of thieves. Few who have encountered an enforcer live to tell the tale and those that do tend to keep whats left of their mouths shut. Enforcers are often hired by underground or unscrupulous organisations for various jobs that require someone of particular skills and morals. Rarely they can rise through the ranks and come to lead powerful crime groups, these groups are often the most dangerous and hardest to reform.

A Delicate Touch

When you choose this archetype at 3rd level, you gain proficiency with the Intimidation and Athletics skills if you do not already. Additionally, choose three simple or martial weapons that lack the Heavy or Two-Handed property. You gain proficiency in them if you don't already have, and these weapons are now able to be used in conjunction with your Sneak Attack feature. 

Shakedown

Additionally, at 3rd level, when the going gets rough you are the often one who started it. You can use Cunning Action feature on your turn to attempt to shove or grapple a creature.

Cut Through The Fat

At 9th level, you know how to stare into a being’s heart and freeze their blood. When you make a Deception, Intimidation, or Persuasion check you can force that creature to make against Wisdom saving throw against a DC of 8 + your proficiency bonus + your Strength or Dexterity modifier. On a failed save, the creature becomes Frightened of you for 1 minute. You can do this once per short or long rest.

King Hit

At 13th level, you've learned to exploit the drop in a mark's guard. When you hit a creature with your Sneak Attack feature, that creature must make a Constitution saving throw against a DC of 8 + your proficiency bonus + your Strength or Dexterity modifier. On a failed save, the creature becomes Stunned until the end of their next turn. You can use this feature a number of times equal to your Strength modifier, and regain all uses after a long rest.

Ice 'Em

At 17th level, the work might be dirty but you always finish the job. When attacking a creature that is either Prone, Stunned, or Frightened your Sneak Attack damage against that creature increases by 4d6.