Ruffian

The harsh life of undercities breeds all sorts of misfits and ne'er-do-wells. The laws of chivalry don't apply when one is backed into a corner with no escape. However, there is a special breed of thug that thrives in situations such as these. Having survived through all the poverty and lawlessness, they've learned to carve they're own path by brawling in a way that's sole purpose is to gain the upper hand on their foes, by any means necessary. The Ruffian deal devastating blows to their opponents with their fists or just about anything in reach, catching them off guard to guarantee that they remain the last one standing in a fight.

Scrappy

Starting at 3rd level, you gain proficiency in unarmed strikes and improvised weapons. These weapons also gain the finesse property and now deal 1d4 damage (the damage type to be determined by the DM and the weapon you are wielding).

In addition, you gain expertise on initiative rolls as you are always ready for a fight.

Fighting Dirty

When you choose this archetype at 3rd level, you have honed the art of close quarters combat and have learned how to gain an edge on your opponent. You can now perform the Shove action when using your Cunning Action ability. While using this action, you may now make the contested roll using either a Strength (Athletics) or Dexterity (Acrobatics) check.

In addition, when you hit a creature with a Sneak Attack using an improvised weapon or unarmed strike, you may regain a number of hit points equal to your proficiency bonus as the adrenaline of hand-to-hand combat hits you. You can use this feature a number of times equal to you Dexterity modifier per short or long rest.

Retaliation

Starting at 9th level, you've learned to make openings for yourself even in the stickiest of situations. When you use your reaction to perform the Uncanny Dodge ability, you may also make an attack roll with an unarmed strike or improvised weapon against the creature that attacked you, as long as they are within 5 feet of you.

You may use this feature a number of times equal to your Dexterity modifier per short or long rest.

Also, your attacks with unarmed strikes and improvised weapons count as magical for the purpose of overcoming resistance and immunity to nonmagical attacks and damage.

Moxie

Upon reaching 13th Level, your unarmed strikes and improvised weapon damage increases to 1d8.

In addition, When you take the Attack action with an improvised weapon or unarmed strike, you may now attack twice on your turn.

Vicious Combatant

When you reach 17th Level, you can put yourself in harm's way to deal a devastating blow to your enemies. When you hit a creature with a Sneak Attack using an unarmed strike or improvised weapon, you may choose to expend any number of your unspent hit die and roll them. Both you and the targeted creature take damage equal to the number rolled. This damage cannot be mitigated and cannot be affected by critical hits.