Skulker

You are skilled in stealth and surviving far from the streets of a city, allowing you to scout ahead of your companions during expeditions. You are a skilled hunter and stalker who is good at isolate and dispatch enemies. Rogues who embrace this archetype are at home in the wilderness and among barbarians and rangers, and many Skulkers serve as the eyes and ears of war bands. Ambusher, spy, bounty hunter – these are just a few of the roles that Skulkers assume as they range the world.

Headhunter

Starting at 3rd level, your confidence propels you into battle. You can give yourself a bonus to your initiative rolls equal to your Wisdom modifier.

You also gain an additional way to use your Sneak Attack; you don't need advantage on the attack roll to use your Sneak Attack against a creature if you are within 5 feet of it, no other creatures are within 5 feet of you, and you don't have disadvantage on the attack roll. All the other rules for Sneak Attack still apply to you.

Survivalist

When you choose this archetype at 3rd level, you gain proficiency in the Nature and Survival skills if you don’t already have it. Your proficiency bonus is doubled for any ability check you make that uses either of those proficiencies.

Superior Mobility

At 9th level, your walking speed increases by 10 feet. If you have a climbing or swimming speed, this increase applies to that speed as well. 
You have trained to become harder to hit and gained 1+ AC.

Ambush Master

Starting at 13th level, you excel at leading ambushes and acting first in a fight.

 

At the start of your first turn of each combat, your walking speed increases by 10 feet, which lasts until the end of that turn. If you take the Attack action on that turn, you can make one additional weapon attack as part of that action. If that attack hits, the target takes an extra 1d8 damage of the weapon's damage type.

Sudden Strike

Starting at 17th level, you can strike with deadly speed. If you take the Attack action on your turn, you can make one additional attack. This attack can benefit from your Sneak Attack even if you have already used it this turn, but you can’t use your Sneak Attack against the same target more than once in a turn.