You focus your training on the grim art of death. Those who adhere to this archetype are diverse: hired killers, spies, bounty hunters, and even specially anointed priests trained to exterminate the enemies of their deity. Stealth, poison, and disguise help you eliminate your foes with deadly efficiency.

Relying on expertly woven movements between each opportunity, you can act fast, and faster, making use of your entire skillset in the split seconds of conflict. Your quick wits and sense of momentum carry you to act with extraordinary focus, bringing sharp metal to vulnerable points in the blink of an eye.

 

 

Decisive Strike

Starting at 3rd level you may expose the weaknesses of foes, achieving a critical hit on a nat19 or 20. Additionally, when you critically strike, you may make a DC (10 + Enemy Dex Mod) Intelligence (Medicine) check to hit a vital, tripling the damage rather than doubling it.

Quick Wits

Starting at 9th level, you can reliably act fast. When you roll for initiative, you have advantage on the roll and proficiency modifier. Additionally, twice per long rest, you can take two turns on the first round of combat using both rolls from the advantage rather than just the higher. 

Death's Touch

Starting at 9th level, provided you are not wearing armor with Stealth Disadvantage, whenever you deal damage that could benefit from the Sneak Attack class feature, you may treat any damage rolls for which the rolled result is less than half the maximum possible roll for that die type as if they were half the maximum value instead. At 17th level, you do not need to roll and instead treat all Sneak Attack damage rolls as the maximum possible value.

Assassinate

Starting at 17th level, you become a master of instant death. Once per long rest when you attack and hit a creature with 100 or fewer hit points, it must make a Constitution saving throw at your Rogue level. On a failed save, you kill it instantly. If the creature is surprised, it automatically fails its Constitution saving throw.