Slaughterer

Instead of using small, light weapons, Slaughterers use any weapon they can get their hands on to decimate their enemies.  Most are sadistic in some way, especially in battle.  Some use this Archetype to go on killing sprees with all kinds of weapons, even varying them to confuse pursuers.  This Archetype has 2 abilities to choose from at levels 9 and 13, giving the Slaughterer a variety of how they go about their mass killings, as well as different powers at level 17 based on your level 9 choice.

Lv 3 Ability: Martial Slaughterer

Choose 3 Simple or Martial Weapons.  Gain proficiency with those weapons if you did not already have it, as well as the ability to use Sneak Attack with those weapons as well. In addition to this, when you attack an enemy, if there are no enemies within 5ft of you other than the attack target at most (in the case of a reach weapon, the attacked enemy may not be within 5ft), you may still deal Sneak Attack damage.  Other than this exception (and the above for weapons you may sneak attack with), all other Sneak Attack prerequisites must be met.

 

You also gain an ability called "Sadist's Rush", as described below:

After reducing an enemy to 0 HP or killing them, you gain 1 bonus action, which you must use immediately or have it disappear.  You may only gain this bonus action once per turn.

Lv 9 Ability: Throw them off

Due to various wide-spread rumors of your killings, it becomes hard to find solid evidence or a lead from what you leave behind.  If someone has no eye-witness accounts of your face while you killed someone or any unique weapons you used while killing someone (Any exotic weapons and Magic Items of Rare tier and above will count as 'Unique Weapons' unless they are simply +2 or +3 weapons), they have disadvantage on rolls to search for you and evidence to blame the killings on you.

Lv 13 Ability: Cause Paranoia

While within 60ft of an enemy that doesnt know where you are, but DOES know that you are trying to kill them, they have disadvantage on all wisdom and intelligence skill checks.  Creatures immune or resistant to Psychic damage are unaffected by this ability.

Lv 17 Ability: Killing Spree

When you kill an enemy with a weapon attack, the body is broken/cut/damaged to the point where the body is ruined to the point of needing 'True Resurrection'.  In addition to this, you can choose one of the killing spree types to choose from below.

1. If you choose this ability, you gain the ability to go on a 'Silent Spree', in which you make no noise and are harder to spot, giving you advantage on stealth checks and giving your enemies disadvantage on perception checks.  While on a 'Silent Spree', you gain the ability to teleport 90ft as a bonus action as long as you are not in line-of-sight before or after the movement.  Also, the range of 'Cause Paranoia' is doubled.
2. If you choose this ability, you gain the ability to go on a 'Deadly Spree', giving you advantage on all attack rolls and causing all attacks you make to crit on 18, 19, or 20 rolls of the d20.  Your sneak attack damage is also multiplied if you land a critical by the same amount your weapon damage is multiplied by.