Sniper

The sniper is the ultimate ranged attacker, using their quick reflexes to hold an angle from a ridiculous position whilst killing their enemies in ridiculous speed.  They are able to sit still and wait for the perfect shot to take down targets, aware or not. They are able to control attacks from themselves and at them to leave themselves in the advantageous position in any battlefield, and they're the perfect killer.

Steady Aim

Starting at 3rd level, you can use your bonus action to ready yourself for the perfect shot. 

You are able to take the Aim action with your cunning action : 

Aim: You gain advantage on your next ranged attack until the next time you willingly move.

 "I've just gotta wait for the perfect shot..." - ???

Master of Arms

When you choose this archetype at 3rd level, you have honed your aim.

You gain the following benefits: 

• Attacking at long range doesn't impose disadvantage on your ranged weapon attack rolls.
• Your ranged weapons ignore half cover and three-quarters cover.
• You gain the proficiency in the Heavy Crossbow, Longbow and Firearms (if the setting has them). 

 "Give me a bow and an arrow and the job will be done" - ???

Holding Angles

Starting at 9th level, you become a master of defending a position. You gain the following benefits:

You can use your reaction to make an opportunity attack on any enemy who has just entered your view willingly. This attack also has sneak attack damage applied to it if it hits. (Does not stack with sneak attack) 

Furthermore, you gain the ability to opportunity attack with ranged weapons.

"Come on... Just a bit further..." - ???

Quick Reflexes

By 13th level, you are able to exploit any advantage you can get in your enemies defences. You gain the following benefits : 

- When wielding a ranged weapon, other creatures provoke an opportunity attack from you when they move within 5 feet of you willingly.

- All your opportunity attacks gain advantage.

- Any creature hit by your opportunity attacks has their speed reduced by half until the end of your next turn. This does not stack with other speed reductions.

*You screwed up now, didn't ya" - ???

Perfect Shot

When you reach 17th level, you have become godly at hitting your enemies in their vital spots. When your score a critical hit on a ranged attack, you deal maximum damage on all your dice (including the critical hit doubled dice).

"A day's job done." - ???