Reaper

You strike from high above, seen by none, or from behind and leave before anyone realizes what has happened. Your mark is seen by all, but that's all they'll see.

Death from Afar

When you choose this archetype at 3rd level, you gain proficiency with all martial ranged weapons.

Assassinate

Starting at 3rd level, you are at your deadliest when you get the drop on your enemies. You have advantage on attack rolls against any creature that hasn’t taken a turn in the combat yet. In addition, any hit you score against a creature that is surprised is a critical hit.

Quick way Through

Starting at 9th level, you have advantage on a Dexterity (Stealth) check if you move no more than half your speed on the same turn. In addition, you also gain the ability to climb faster than normal; climbing no longer costs you extra movement.

Ethereal Jaunt

Like a ghost, you have the ability to slip in and out of the Ethereal Plane. You can now use your Cunning Action to teleport to an unoccupied space within 30 feet of you. You don’t need to see that space to teleport to it, but your teleportation fails, wasting your bonus action, if you attempt to teleport through magical force that is Medium or larger, such as a wall of force. If you appear in a space occupied by another creature or filled by an object, you are immediately shunted to the nearest unoccupied space that you can occupy and take force damage equal to twice the number of feet you are shunted.

Death Strike

Starting at 17th level, you become a master of instant death. When you attack and hit a creature that is surprised, it must make a Constitution saving throw (DC 8 + your Dexterity modifier + your proficiency bonus). On a failed save, double the damage of your attack against the creature.