Hidden One

You combine the grim art of assassinations with the intellect of an inquisitor. You are a member of a hidden organization that deals in the killing of threats in the darkness while maintaining a reputation in society. You excel at dealing swift blows and discerning people's true intent.  

Eagle eyes

Starting at 3rd level you can use you bonus action to concentrate allowing you to use your mind's eye to make a Wisdom (Perception) check to identify hidden enemies or treatures in a 50 ft radius. 

Social Blending

When you choose this archetype, you gain proficiency with disguise tools.  

Blade in the dark

Starting at 3rd level you are a master of striking when least expected. You have advantage on attack rolls when attacking a creature that hasn't attacked. Additionally all hits you score against a surprised creature are critical hits.  

Combat training

Starting at level 9 your training has given you the tools to decipher an opponent's tactics. As a bonus action you can make a Wisdom (Insight) check against a creature you can see that isn't incapacitated, contested by the target's Charisma (Deception) check. If you succeed, you can use your Sneak Attack against the target even if you don't have advantage on the attack roll. 

This benefit last for one minute or until you successfully use this feature against another target.    

Swift Movement

You are a master at getting from point A to point B quickly and stealthily. When moving alone, you are unhindered by difficult terrain and can move stealthily through them at your normal movement speed.  

Eagle Vision

Starting at 13th level your senses sharpen and are almost impossible to fool. You learn to exploit a creature's weak points as your vision penetrates them. While a creature is affected by you Combat Training feature, increase your Sneak Attack damage by 3d6. 

Additionally, you can use a bonus action to detect the presence of illusions, traps or magical effects design to deceive the sense within 30 feet of you as long as you are not blinded, deafened or otherwise incapacitated. You can use this bonus action a number of times equal to your Wisdom score modifier (minimum of 1) and you regain all uses after finishing a long rest.  

Hidden Blade

Starting at 17th level you are a master of assassination. When you attack a surprised creature and hit, the creature is knocked prone. 

Additionally, it must make a Constitution Saving throw (DC 8+ your Dexterity Modifier + your proficiency bonus), On a failed save, it takes double the damage of your attack. On a successful save, the creature has disadvantage on attack rolls until the end of his next turn.