Blade Thrower

see above

Anything in a Pinch

Starting at 3rd level, you've learned the proper way to throw most things as long as their aren't cumbersome, you may treat any weapon with the light  property as though it also had the thrown and versatile properties as well. You also gain proficiency with improvised weapons. 

Two-weapon Fighting Proficiency

When you choose this archetype at 3rd level, when you engage in two-weapon fighting, you can add your ability modifier to the damage of the second attack.

Loaded Fist

Getting the drop on your enemy is key to any victory, and your nimble fingers help you make the most of it. Starting at 9th level, if you were to make your first attack in combat, and no one has attacked you yet, you may throw one additional projectile at any target within range if you have the ammunition available. 

Deft Improved Critical

Beginning when you choose this archetype at 13th level, your thrown weapon attacks score a critical hit on a roll of 19 or 20. Additionally, you can roll one additional weapon damage die when determining the extra damage for a critical hit with a thrown weapon attack.

Also, whenever you score a critical strike against a creature with a thrown weapon, you may instantly make another attack against the same target if you have the ammunition available. 

Ricocheting Strikes

When you reach 17th level, you've mastered the art of hurling projectiles to the point of an art form, managing to bounce blades from one target to another. When you hit with a thrown weapon attack, you may make an additional attack roll against any creature within 15ft of the target. 

Additionally, your Loaded Fist ability now allows you to throw one more additional projectile (three total) if you have the ammunition available.