Free-runner

You focus your skills on mobility and physical elusiveness. Those who follow this archetype are nearly impossible to pin down in a fight, clambering over obstacles and even sheer walls with ease. Free-runners are always moving, using their unparalleled agility to strike with deadly force.

Sprint

When you choose this archetype at 3rd level, you can make use of your momentum to enhance your agility. Your speed increases by 10ft, if you spent all of  your movement continuously last turn. You can only be affected once by this instance of speed increase at a time.

Additionally, you gain proficiency in the Acrobatics skill, if you don't already. Your proficiency bonus is doubled for all ability checks made using this skill.

Swift Strike

Starting at 3rd level, you learn how to use your mobility to your advantage in combat and catch opponents off guard. When you take the Dash action and move at least 20ft towards a creature you may use your Sneak Attack against that creature this turn, even if you don't have advantage on the attack roll.

Parkour

At 9th level, your improved mobility allows you to perform borderline impossible acrobatic feats. When you take the Dash action, you can move along vertical surfaces without falling during your movement, and you can move across elevation changes and gaps up to 5ft as if it were flat ground.

Improved Evasion

Beginning at 13th level, whenever you are missed by an attack or succeed on a Dexterity saving throw, you can use your reaction to move up to your speed. During this movement, Opportunity attacks have Disadvantage against you. This movement can benefit from your Parkour Feature

Masterful Agility

At 17th level, your elusiveness and mobility becomes unchallenged. Your movement does not provoke opportunity attack and ignore difficult terrain.

Additionly, whenever you use your swift strike feature, your Sneak Attack increase by 4d6 against the targeting creature